Moved the pullnav stuff I've been working on into ios-shared on a branch so that I can make it into a fully fledged example of its use.
Merge pull request #51 from walmartlabs-wmusiphone/rx-integration

Merge upstream from walmart/rx.
Fixed type conversion issue and added the SDSpanParser to the ios-shared project.
Fixed a type incompatibility.
Fixed a bug where NSUInteger was the wrong choice to fix a sign conversion error. SDNumberField no longer crashes when deleting after the field is empty.
Merge branch 'master' of github.com:setdirection/ios-shared into features/global-pullnav
Adding GlobalNavMenu example app.
Sample app
Adding the animation stuff. Probably not going to add that though.
Merge pull request #52 from walmartlabs-wmusiphone/rx-integration

Removed deprecated SDWebService 1.0 calls.
Pulled out the gesture stuff out the of tabButton. Hooked up the pan gesture to it.
Simplified the demo storyboard (un-sam'ed it). Also re-ordered the creation of the subviews to avoid doing things once when super == nil and when we in fact know the superview.
Even less duplication of setup.
More clean up. less magic.
A container view that allows stacking subviews vertically.
Adding commentary to Auto Layout Stack View
Fixing the way that constraints are updated. Also, fixing a typo in the demo app.
Removing incorrect comment
Adding an ASCII Art illustration to header
Fixing copyright assignment and minimum platform requirement for demo code