Merge pull request #51 from fjenett/master

Added JS mode to contributions file
Added exception handling for UTF-8 decoding errors.
Updated list of contributions.
First edits of pshader tutorial
added images folder for shader tutorial
added link to github repo with intro examples
more edits to pshader tutorial, smaller pipeline diagram
Fixing first example.
Fixing second and third examples.
Fixing fourth example.
added section 3 to pshader tutorial
added sections 4 and 5 to pshader tutorial
added section 6 of pshader tutorial
added section 7 of pshader tutorial
added section 8 of pshader tutorial
added section 9 of pshader tutorial
added section 10 of pshader tutorial
added some images
Add Shader tutorial to XML for generator
Edits to beginning of Shader tutorial
Changed patrons page to foundation page
Adding foundation.html to static content