Created XCode project and .framework for OS X.
Changed framework name to Artemis from Artemis-Cpp.

This will make the code portable since the include directives will be #include<Artemis/*> like the Linux and Windows version.
Deleted XCode project.
Improved folder structure and cmake compilation.

Header files moved to include/Artemis to match the same path as the installed headers.
CMakeLists.txt updated to better compiling if used as a subdirectory in other CMake projects.
Merge branch 'cmake'
Updated README.md to show the addition of Artemis.framework.
Merge branch 'xcode'
Added XCode Framework project and Artemis.framework for OS X.
Merge pull request #7 from L4D15/master

Mac OS X Framework