Spelling fixes
Add Gawain's method for basic extension development set up
Merge pull request #109 from GawainLynch/gawain-extension-dev

Add Gawain's method for basic extension development set up
Updating .gitignore.
Updating docs to new lay
No bower components
Tweaking
Updating docs.
Updating docs
Deleting some files
New highlighter
Updating scss
Compiled css
Tweaking CSS
Cleaning up content
Tweaking template
Rendered CSS
Added extra link
Cleaning up content
Added a link