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

+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/*
+rm -rf ~/Library/Caches/com.apple.dt.Xcode/*