:fire: RBLView

Just use NSView directly. Then you get full control over layer-backing
and Auto Layout as well.
Mark RBLResizableImage.capInsets as atomic

Matches NSImage on 10.10.
Fix format specifiers for NSLayoutPriority values
++xcconfigs
Don't automatically build tests with main target
Remove RBLView and RBLViewController imports
Merge branch 'master' into xcode6

Conflicts:
	Rebel/RBLResizableImage.h
	Rebel/Rebel.h
++xcconfigs
Remove Expecta and Specta, add Quick submodule
:fire: unnecessary files, fix up Cocoa imports
Upgrade to Quick spec syntax
:fire: RBLViewSpec
Upgrade to Nimble matcher syntax
Add dummy Swift file for unit testing
Update to jspahrsummers/objc-build-scripts@a54782
Fix deployment target for tests
Fix crash in RBLHTMLView expectation
Don't try to create a window in unit tests
Merge pull request #145 from github/xcode6

Xcode 6.1 support, remove RBLView