Adding an option to build 32/64 bits "fat" binaries on MacOS X
Enabling building the library for iOS

- Addition of a simple cmake module
- Addition of a python script to handle the installation and workaround a [cmake bug #12506](http://www.cmake.org/Bug/view.php?id=12506)
Adding a python script for simple build on mac os x
Merge pull request #1 from masagroup/ios-port

iOS and Mac OS X Helpers