Add basic tests

Author: dinoboy197

.gitignore

@@ -1,3 +1,5 @@
 /.project
 chrome/screenshot*.jpg
 /pageaccel.zip
+node_modules
+npm-debug.log

.nvmrc

@@ -0,0 +1 @@
+10.16.3

README.md

@@ -8,6 +8,17 @@ For users who prefer to use the standard (non-accelerated version) of pages on a
 
 PageAccel is a free, community-driven open source project.
 
+[How does this work?](#how-does-this-work)
+
+[Installation](#installation)
+
+[Development](#development)
+
+-   [Initial Setup](#initial-setup)
+-   [Testing](#testing)
+
+* * * * *
+
 ## How does this work?
 
 Some websites provide alternative, streamlined versions of their pages called AMP (accelerated mobile pages). These pages are created to load faster and provide simplified content for both desktop and mobile users alike. When PageAccel detects that a page has an AMP version, it switches to use it.
@@ -18,11 +29,30 @@ PageAccel does *not* create any of its content, nor does it alter pages by itsel
 
 Open the [PageAccel Home Page](http://pageaccel.raack.info) and click the installation button.
 
+* * * * *
+
+## Development
+
+### Initial Setup
+
+1. Install [Node.js](https://nodejs.org/en/).
+1. Install [NVM](https://github.com/creationix/nvm)
+1. `nvm install`
+
+### Testing
+
+1. `npm test`
+
+* * * * *
+
 ## TODO
 
 * Add "Send Feedback / Broken Page" item to menu to allow direct feedback, positive and negative. Include page currently on and message with feedback. Send this to [email protected].
 * Prompt user for feedback (rating, free text, or both) after having visted several simplified pages. Indicated to them which ones were simplified.
 * Register simplified and standard domains as pairs, in case they're different.
- * This may also alleviate the need for the tld domain list
+  * This may also alleviate the need for the tld domain list
 * Remove unused tabs from storage if not used in last x days
 * Provide stats button in pageaccel so user can see stats anytime.
+* Add tests for what the Action Button in the browser panel looks like when loading an AMP page once Puppeteer supports this: 
+  * https://github.com/GoogleChrome/puppeteer/issues/2486
+  * https://github.com/GoogleChrome/puppeteer/issues/1215