Add link to API for "data-manual"

A link to the API section is helpful for those who need to use the "data-manual" or other features that are not included in "Basic usage" since the API section is located on the "Extending Prism" page.
Add Sass (scss) support
Remove Sass from default prism.js & examples
Merge pull request #72 from MoOx/scss

Add Sass (scss) support
Fixes some Sass issues
Close #73, close #79
Merge pull request #80 from MoOx/sass-fixes-73-79

Fixes Sass issues #73 & #79
fixed URLs in strings.
Merge pull request #81 from ngryman/gh-pages

Fixes URLs in strings
Merge pull request #60 from davidl/patch-1

Add link to API at end of "Basic usage" section
Merge remote-tracking branch 'origin/gh-pages' into gh-pages

Conflicts:
	code.js
Merging with original branch changes