Basic integration of the work of @blairand on the resource section

* Thanks!
* Fixes #17
* slightly reworded some parts
* added it to the menus
Moaaar resources making the one paragraph at index.html irrelevant
A general resource section
And a contributor :-) <3
array creation: contents instead of arguments
note on absolute/relative filenames
Merge pull request #22 from bkleinen/gh-pages

unix filenames + array beautifcation