GPUImage Monotouch binding

Adding the binding and an iPhone sample project of the GPUImage lib.

The sample is not that great but it's a start: the lib seems to be
working, it justs miss some binding (some filters are missing but are
easy to implements).
Changing sample iOS Build linking to "None"

And it's working on my iPad mini
Finally got the dependencies linking working!

And it still works on my iPad mini.
Reorganizing solutions
Adding Gray and monochrome filters
added missing binding for GPUImageVideoCamera and GPUImageStillCamera
verified Objective-Sharpie Verify attributes
removed verify attribute comments
created completionBlock delegates
added GPUImageBulgeDistortionFilter
added QuartzCore to the list of frameworks loaded
removed duplicate bulge filter definition
[GPUImage] fixed bulge filter property bound wrong, its Scale instead of Angle
Merge pull request #1 from aphex3k/master

Added GPUImageVideoCamera and GPUImageStillCamera + fixes
Update ApiDefinition.cs

Added missing bindings for GPUImageMovie, GPUImageMovieWriter and GPUImageBrightnessFilter.
Merge pull request #2 from saadimran/master

Update ApiDefinition.cs
Merge pull request #1 from pixelnest/master

Pulling GPUImage