diff --git a/Gulpfile.js b/Gulpfile.js
index 78adc0b0..049eea7c 100644
--- a/Gulpfile.js
+++ b/Gulpfile.js
@@ -2,11 +2,13 @@
 const babel = require('rollup-plugin-babel');
 const connect = require('connect');
 const eslint = require('gulp-eslint');
+const fs = require('fs');
 const gulp = require('gulp');
 const header = require('gulp-header');
 const http = require('http');
 const minify = require('uglify-js').minify;
 const mochaPhantomJS = require('gulp-mocha-phantomjs');
+const path = require('path');
 const rollup = require('rollup-stream');
 const serveStatic = require('serve-static');
 const source = require('vinyl-source-stream');
@@ -20,11 +22,11 @@ const banner = ['/**',
   ' * <%= pkg.name %> - <%= pkg.description %>',
   ' * @version v<%= pkg.version %>',
   ' * @link <%= pkg.homepage %>',
-  ' * @license <%= pkg.license %>',
-  ' */',
+  ' * @author <%= pkg.author %>',
+  ' * @license <%= pkg.license %> */',
   ''].join('\n');
 
-gulp.task('build', () =>
+gulp.task('do-build', () =>
   rollup({
     entry: './src/postmate.js',
     format: 'umd',
@@ -41,6 +43,15 @@ gulp.task('build', () =>
     .pipe(gulp.dest('./build'))
 );
 
+gulp.task('update-readme', () => {
+  const readme = path.join(__dirname, 'README.md');
+  const data = fs.readFileSync(readme, 'utf-8');
+  const distSize = fs.statSync(path.join(__dirname, 'build', 'postmate.min.js')).size;
+  const updated = data.replace(/<span class="size">(.*?)<\/span>/,
+    `<span class="size">\`${(distSize / 1024).toFixed(1)}kb\`</span>`);
+  fs.writeFileSync(readme, updated);
+});
+
 gulp.task('lint', () =>
   gulp.src(['**/*.js', '!node_modules/**', '!build/**'])
     .pipe(eslint())
@@ -83,4 +94,5 @@ gulp.task('test', ['parent-test-server', 'child-test-server', 'do-test'], () =>
 });
 
 gulp.task('watch', () => gulp.watch('./src/postmate.js', ['build']));
+gulp.task('build', ['do-build', 'update-readme']);
 gulp.task('build-watch', ['build', 'watch']);
diff --git a/README.md b/README.md
index 9281a5a0..efa92e46 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ You can download the compiled javascript directly [here](/build/postmate.min.js)
 * Child exposes a `model`, an object literal whose values consist of serializable values, functions and promises, that the parent can retrieve.
 * Child can emit events that the parent can listen to.
 * *Zero* dependencies. Provide your own polyfill or abstraction for the `Promise` API if needed
-* Lightweight, weighing in at ~ `3kb`
+* Lightweight, weighing in at ~ <span class="size">`4.6kb`</span>
 
 ## Installing
 Postmate can be installed via NPM or Bower.
diff --git a/build/postmate.min.js b/build/postmate.min.js
index 6dc1c8eb..fc20d6db 100644
--- a/build/postmate.min.js
+++ b/build/postmate.min.js
@@ -1,7 +1,7 @@
 /**
  * postmate - A powerful, simple, promise-based postMessage library
- * @version v0.3.0
+ * @version v1.0.0
  * @link https://github.com/dollarshaveclub/postmate
- * @license MIT
- */
+ * @author Jacob Kelley <jakie8@gmail.com>
+ * @license MIT */
 !function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):e.Postmate=t()}(this,function(){"use strict";function e(){var e;l.debug&&(e=console).log.apply(e,arguments)}function t(e){var t=document.createElement("a");return t.href=e,t.origin}function n(e,t){return e.origin===t&&("object"===a(e.data)&&("postmate"in e.data&&e.data.type===o))}function i(e,t){var n="function"==typeof e[t]?e[t]():e[t];return Promise.resolve(n)}var a="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol?"symbol":typeof e},r=function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")},s=function(){function e(e,t){for(var n=0;n<t.length;n++){var i=t[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(e,i.key,i)}}return function(t,n,i){return n&&e(t.prototype,n),i&&e(t,i),t}}(),o="application/x-postmate-v1+json",d=function(){function t(n){var i=this;r(this,t),this.parent=n.parent,this.frame=n.frame,this.child=n.child,this.childOrigin=n.childOrigin,this.events={},e("Parent: Registering API"),e("Parent: Awaiting messages..."),this.listener=function(t){var n=((t||{}).data||{}).value||{},a=n.data,r=n.name;"emit"===t.data.postmate&&(e("Parent: Received event emission: "+r),r in i.events&&i.events[r].call(i,a))},this.parent.addEventListener("message",this.listener,!1),e("Parent: Awaiting event emissions from Child")}return s(t,[{key:"get",value:function(e){var t=this;return new Promise(function(n){var i=(new Date).getTime(),a=function e(a){a.data.uid===i&&"reply"===a.data.postmate&&(t.parent.removeEventListener("message",e,!1),n(a.data.value))};parent.addEventListener("message",a,!1),t.child.postMessage({postmate:"request",type:o,property:e,uid:i},t.childOrigin)})}},{key:"on",value:function(e,t){this.events[e]=t}},{key:"destroy",value:function(){e("Parent: Destroying Postmate instance"),window.removeEventListener("message",this.listener,!1),this.frame.parentNode.removeChild(this.frame)}}]),t}(),h=function(){function t(a){var s=this;r(this,t),this.model=a.model,this.parent=a.parent,this.parentOrigin=a.parentOrigin,this.child=a.child,e("Child: Registering API"),e("Child: Awaiting messages..."),this.child.addEventListener("message",function(t){if(n(t,s.parentOrigin)){e("Child: Received request",t.data);var a=t.data,r=a.property,d=a.uid;i(s.model,r).then(function(e){return t.source.postMessage({property:r,postmate:"reply",type:o,uid:d,value:e},t.origin)})}})}return s(t,[{key:"emit",value:function(t,n){e('Child: Emitting Event "'+t+'"',n),this.parent.postMessage({postmate:"emit",type:o,value:{name:t,data:n}},this.parentOrigin)}}]),t}(),l=function(){function i(e){r(this,i);var t=e.container,n=e.url,a=e.model;return this.parent=window,this.frame=document.createElement("iframe"),(t||document.body).appendChild(this.frame),this.child=this.frame.contentWindow,this.model=a||{},this.sendHandshake(n)}return s(i,[{key:"sendHandshake",value:function(i){var a=this,r=t(i);return new Promise(function(t,s){var h=function i(o){return!!n(o,r)&&("handshake-reply"===o.data.postmate?(e("Parent: Received handshake reply from Child"),a.parent.removeEventListener("message",i,!1),a.childOrigin=o.origin,e("Parent: Saving Child origin",a.childOrigin),t(new d(a))):(e("Parent: Invalid handshake reply"),s("Failed handshake")))};a.parent.addEventListener("message",h,!1),a.frame.onload=function(){e("Parent: Sending handshake"),a.child.postMessage({postmate:"handshake",type:o,model:a.model},r)},e("Parent: Loading frame"),a.frame.src=i})}}]),i}();return l.Model=function(){function t(e){return r(this,t),this.child=window,this.model=e,this.parent=this.child.parent,this.sendHandshakeReply()}return s(t,[{key:"sendHandshakeReply",value:function(){var t=this;return new Promise(function(n,i){var a=function a(r){if("handshake"===r.data.postmate){e("Child: Received handshake from Parent"),t.child.removeEventListener("message",a,!1),e("Child: Sending handshake reply to Parent"),r.source.postMessage({postmate:"handshake-reply",type:o},r.origin),t.parentOrigin=r.origin;var s=r.data.model;if(s){for(var d=Object.keys(s),l=0;l<d.length;l++)s.hasOwnProperty(d[l])&&(t.model[d[l]]=s[d[l]]);e("Child: Inherited and extended model from Parent")}return e("Child: Saving Parent origin",t.parentOrigin),n(new h(t))}return i("Handshake Reply Failed")};t.child.addEventListener("message",a,!1)})}}]),t}(),l});
\ No newline at end of file
diff --git a/package.json b/package.json
index b96e3eed..e64e2524 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "postmate",
-  "version": "0.3.0",
+  "version": "1.0.0",
   "description": "A powerful, simple, promise-based postMessage library",
   "main": "src/postmate.js",
   "devDependencies": {
@@ -25,7 +25,7 @@
   },
   "scripts": {
     "test": "gulp test",
-    "build": "gulp build",
+    "build": "gulp build && gulp update-readme",
     "build-watch": "gulp build-watch",
     "lint": "gulp lint",
     "postpublish": "PACKAGE_VERSION=$(cat package.json | grep version | head -1 | awk -F: '{ print $2 }' | sed 's/[\",]//g' | tr -d '[[:space:]]') && git tag $PACKAGE_VERSION && git push origin --tags"