Move implementation into subdirectory [WIP]
Move parametric block declarations & definition to separate file [WIP]
Add demo project
Clamp time to range [0 1] to prevent nan values (fixes circular in in demo)
Add circular in-out; fix cubic out, sine out, sine in-out; kill squashed sine
Add composed example (back in expo out)
Move default number of steps to a shared file
Add linear interpolation blocks
Add Parametric Animations with UIView; 
This uses animateKeyframesWithDuration:delay:options:animations:completion: added in iOS 7