Merge pull request #9 from ParsePlatform/richardross.cpp.clang

Use clang's libc++ instead of GNU's libstdc++.

Configurations/Common.xcconfig

@@ -13,7 +13,7 @@
 CLANG_ENABLE_OBJC_ARC = YES
 GCC_C_LANGUAGE_STANDARD = gnu11
 CLANG_CXX_LANGUAGE_STANDARD = gnu++14
-CLANG_CXX_LIBRARY = libstdc++
+CLANG_CXX_LIBRARY = libc++
 
 // Search Paths
 PARSE_DIR = $(PROJECT_DIR)