Merge pull request #7 from sandyjoshi/master

Changed var to const at all the possible places and removed unused vars.

Author: juliakm

gulpfile.js

@@ -1,7 +1,6 @@
-var gulp = require('gulp');
-var mocha = require('gulp-mocha');
-var istanbul = require('gulp-istanbul')
-var fs = require('fs');
+const gulp = require('gulp');
+const mocha = require('gulp-mocha');
+const istanbul = require('gulp-istanbul')
 
 gulp.task('default', function () {
     gulp.src('tests/**/*.js')

server.js

@@ -12,6 +12,6 @@ app.get('/', (req, res) => {
   res.send('Hello Node.js Sample!\n');
 });
 
-var port = process.env.PORT||PORT;
+const port = process.env.PORT||PORT;
 app.listen(port);
 console.log(`Running on http://${HOST}:${PORT}`);