* Depend on FIRInstallations instead of IID, load an installations object into FIRInAppMessagingPrivate.h
* Bootstrap FIRInAppMessaging.h with an instance of FIRInstallations
* Update FIRIAMClientInfoFetcher to use FIRInstallations method to grab FID and FIS Token
* Call new client info fetcher method
* Fix up tests
* Change nullability for FIRInstallations object, handle null case
* More verbose comments in FIRIAMClientInfoFetcher, call completion in case that FIS token is fetched, but FID fails
* Throw error and call completion if Firebase Installations object is not created
* Send FIS token with method fetch requests
* Add test class for FIRIAMClientInfoFetcher
* Refactor FIRIAMClientInfoFetcher to get a FIRInstallations object injected
* Add unit testing for fetchFirebaseInstallationDataWithProjectNumber: in FIRIAMClientInfoFetcher
* Streamline unit tests, add case for nil FirebaseInstallations, clean up comments that were left in
* Move display SDK source and resources into FIAM SDK
* Change files prefixed with FID to be prefixed FIRIAM
* Restructure example apps in firebase-ios-sdk directory
* Fix directory structure for FIAM
* Move proto files into base directory
* Fix up proto files
* Move unit test files to Firebase/InAppMessaging/Tests
* Move FIRIAMSDKModeManagerTests and require app host in podspec
* Move sample apps to tests folder
* Add empty repo for FIAMDisplay that generates a warning
* Fix up functional tests app
* Fix up default UI test app
* Re-generate protos
* Add warning to remove display pod
* Remove display podspec from .travis.yml
* Remove trailing whitespace
* Fix import in test app
* Add changes to point to the default test app
* Wrap iOS version conditionals
* Add line in podspec about deprecation
* Delete whitespace in podspec
* Delete pods section in project file
* Update changelog with consolidation info
* Fix indentation in podspecs
* Fix some import issues
* Fix indent on FirebaseInAppMessaging.podspec
* Delete FirebaseInAppMessagingDisplay, update podfile for external test app
* Update podfiles, bump iOS min version to 9, remove iOS 9 checks in FIRIAMActionUrlFollowerTests
* Add line in CHANGELOG referencing deletion of display sdk pod
* Remove unused podfile
* Update min version on Podfiles to iOS 9
* Add back FirebaseInAppMessagingDisplay.h
* Add iOS support message to CHANGELOG.md
* Wrap necessary deprecated iOS 9 call
christibbs