JHActivityButton

UIButton Subclass with a built-in UIActivityIndicator. Based off the Ladda concept by Hakim El Hattab http://lab.hakim.se/ladda/

JHActivityButton makes use of the AHEasing library.

Known Issues:

• Only kCGColorSpaceModelRGB and kCGColorSpaceModelMonochrome colors are supported for the eased color transform for the background
• Some color transitions may not properly support Back/Elastic/Bounce easing functions. You can't get more black than black or more white than white.