Converted project to ARC (safe for iOS4 -- no "weak" keyword).
Update iOS deployment target to 4.0

ARC won't work on 3.2.
Fixed a bug whereby an assign should have been an unsafe_unretained.
Updated README to note the main difference, while maintaining Matt's attribution.
Renamed delegate to splitDelegate to avoid confusion and possible conflicts.
Changed minimum view width to 100 (I had thumbnails in the master view that size).
Added MG_PANESPLITTER_ANIM_DURATION to control the speed of using [UIView animateWithDuration:].
Moved call to [self setup] to viewDidLoad, which makes MGSplitViewController Storyboard-friendly.
setSplitPosition now uses [UIView animateWithDuration:] instead of old [UIView beginAnimations .. commitAnimations].
add podspec