Support including and filtering by framework dependencies

[jverkoey]

Objective-C frameworks that have dependencies don't work with apidiff due to the inability to resolve header imports. If these imports are resolved, apidiff ends up generating API diffs for both the current library and all of its dependencies (certainly not ideal).

Ideally apidiff would check out the relevant dependencies at the relevant versions and then filter apidiff results to only those found within the current library.

[jverkoey]

To provide a framework to sourcekitten:

 -F/Users/featherless/Library/Developer/Xcode/DerivedData/MaterialMotionTransitions-fcuogseadwyrimacsuhktbzthmab/Build/Products/Debug-iphonesimulator/MaterialMotionRuntime