Messenger example - register, confirm, and unregister user facts

• Load user facts from client and update DB contact
• Register and confirm email fact
• Unregister email fact
• Register and confirm phone fact
• Unregister phone fact

xcode-remove-caches.sh

+pkill -int com.apple.CoreSimulator.CoreSimulatorService
+killall Xcode
 rm -rf "$(getconf DARWIN_USER_CACHE_DIR)/org.llvm.clang/ModuleCache"
 rm -rf "$(getconf DARWIN_USER_CACHE_DIR)/org.llvm.clang.$(whoami)/ModuleCache"
 rm -rf ~/Library/Developer/Xcode/DerivedData/*