Ignore the node_module folder
Add auto detection tests
Add utility module for test suite
Add tests for special cases

These tests as using a browser emulator but the actual index.html isn't
going to have tests in it. Rather, the html file is only being used for
node.js and jsdom.
Add mocha options
Move pacage.json to the root of the project
Fix build for node after package.json move
Add node modules for running tests
Add script to run tests with npm test
Update language test examples
Add dart language test example
Fix test names

* sentence clarification
* small typo
Remove unnecessary semicolon
Pull out function for repeated autodetection tests
Fix alignment of the variable assignments
Use initHighlighting instead of the manual setup
Move language examples to subdirectory

This will allow for multiple code snippets to be auto detected in one
language.
Change languagesList for the new file structure
Change testAutoDetection to handle multiple files
Change test docs to mention the command line tests