Added build.sh to produce a universal iOS library
Added color filter

Use case: Set all the pixels of an image to a color, for generating
fast background colors.
Merge pull request #1 from BradLarson/master

Update of my fork
Fixed an issue that caused an app crash if the processing of the video was cancelled right after it started. This caused the assetWriter of the GPUImageMovieWriter to be in an unknown state instead of a cancelled state.
Added GPUImageLoopingMovie to support looping videos
Removed duplicate GPUImageMovieDelegate definition
Bugfix when recording input from two inputs (mismatched timestamps). Now always uses time from first input.
Fixed #import
Improved handling when looping ends
Merge pull request #1001 from jvaldera/master

Fixed an infrequent app crash when a video processing is cancelled.
Fixed crashes related to dispatch_get_specific() on iOS 4.x, removed a deprecation warning.
Added shouldRepeat as property on GPUImageMovie to loop movies instead of a separate class
Fixed forceProcessingAtSize: glitches for the bulge, pinch, pixellate, sphere refraction, and centered Gaussian blur filters.
Merge pull request #1003 from jonathanellis/master

Added support for looping movies and recording from two simultaneous video inputs
Remove unnecessary -forceProcessingAtSize: from FilterShowcase.
Experimenting with changing GCD queues on video encoding to improve audio recording performance.
Fixed the haze and levels filters under iOS 7.0.
Allow matching existing alpha value in color generator filter
Put solid color generator overloads back, improve performance
GLSL fixes