Add `RKSupport` dependency and fix build issues in MIMEKit
Move Search into Deprecated pending spin out into standalone library
Fix build issues in MIMEKit
Fix build issues in test suite to start bringing the library back together
Bump RKSupport to pick up fixes for warnings
Stub out functionality in classes to clear out build warnings clouding the project
Update Cocoapods to v0.29

Add spec's social_media_url