Split the JWSplitView class out into a separate framework.
Removed some unneeded code from JWSplitView.h and JWSplitView.m.
Removed some unneeded blank lines.
Added the ability to constrain the size of a JWSplitView's subviews.
Added the ability to get and set the positions of a JWSplitView's splitters as an array of NSNumbers.
Updated README.
Fixed typo in README.
Merge remote-tracking branch 'origin-wjk/master'

Conflicts:
	JWSplitView/JWSplitView.h
	JWSplitView/JWSplitView.m