Added strokeStart and strokeEnd properties
initial POPAnimator thread safety
Merge branch 'master' of https://github.com/RuiAAPeres/pop into RuiAAPeres-master
Merge branch 'RuiAAPeres-master'
Add barTintColor Animatable Property
Add barTintColor Animatable Property

POPAnimatableProperty.h
add support for platform-specific colors; issue #39
add more external resources
Merge branch 'master' of https://github.com/nicopasso/pop into nicopasso-master
Merge branch 'nicopasso-master'
add color interpolation to basic animation; fix #36
Added strokeColor property
Fixed small typo
Add TabBars barTintColor animatable property
Merge pull request #44 from RuiAAPeres/master

Added strokeColor Property & fixed a small typo
improve color conversion; add basic animation unit tests; #36
Merge branch 'master' of https://github.com/nicopasso/pop into nicopasso-master
Merge branch 'nicopasso-master'
support computing decay duration independent of fromValue; fix #37
update podspec for 1.0.4 release