Enable code folding when viewing files in GitHub.
Code folding - the ability to selectively hide and display sections of a code - is an invaluable feature in many text editors and IDEs. Now, developers can utilize that same style code-folding while poring over source code on the web in GitHub. Works for any type of indentation, spaces or tabs.
--- CHANGELOG ---
-fix missing css file
- remove jQuery dependency
- use event page instead of permanent background