title: Cannot be open a Xcode project which is created by CMake
body: <p>I have a C++ project which created in Visual Studio 2010 IDE. Now I want to continue my development in Xcode IDE with GCC in Mac Platform. So I created an Xcode project using CMake to continue my development. 
  But after I created Xcode project, I tried to open my project (by double-clicking .xcodeproj file), then It's saying an error message that is "Project /Users/../Desktop/MyProj/Build/MyProj.xcodeproj cannot be opened because the project file cannot be parsed". 
  What could I do to solve this problem? If anybody having some idea regarding this, please reply on this thread. 
  Xcode version: 4.6.3 CMake Version: 2.8-11</p>