(Maint)|Add Carthage support (mindbody#6)

* Add Carthage support

- Add shared scheme and an iOS framework target to make this a
framework consumable by Carthage
- Fix broken workspace & project
- Fix broken MBDebugPanelDemo target
- Remove internal cocoapod dependency for itself (for Demo target)
- Fix all build issues
- Reorganize file structure some & remove some stagnant files

* Add 'presentViewController:animated:completion' to public class method declarations

* Cleanup

- Add -setTitle: to MBDebugPanel
- Remove plist files for nonexistent frameworks
- xCode autocorrected some project warnings

Merge pull request mindbody#4 from fvasc/bugfix/access-resources-when…

…-loading-pod-as-framework

point to framework bundle

Update Podspec

v0.2.0 Bug fix to simple 'switch' component

Update podspec

linting issues