Experiment to integrate the CRT style shaders supported by bsnes (distributed via GPL). WIP

http://filthypants.blogspot.co.uk/2011/05/more-emulator-pixel-shaders-crt-updated.html
refactor
moved shader code into .xml files
Added higan's xml shader repo to bower dependencies. Need to write in support for these files so they don't need to be modified to use in WebNES
Merge branch 'crtShaderExperiment' of https://github.com/peteward44/WebNES into crtShaderExperiment
Added ability to load rom through a select element on the main page
Copy and rename .shader files to release shader folder
Attempting to get higan xml shaders working. Still needs some compatibility work.
Added OES_standard_derivatives OpenGL extension
Added higen's shaders modified to run on OpenGL ES 2.0 (webgl).
Got some more shaders working, loading shaders should be part of unit tests
Added shader manifest build tool, added combo box to select shader when webgl enabled
got dynamic change shader working
Moved default shader within the code, this is now loaded if one is missing from an effect definition
Sorted shader list, removed broken ones
Merge pull request #2 from peteward44/crtShaderExperiment

Crt shader experiment