Added PCL project. Modified TinyIoC.cs to support a portable library with the following target profile: NET45, SL4+,  WP7.5+, StoreApps, MonoAndroid and MonoTouch. Used the idea from the pull request (https://github.com/grumpydev/TinyIoC/pull/17) to support WP7.5/WP8. Added compiler condition 'PORTABLE' for the PCL version of TinyIoC. Converted the solution file to VS2012.
Added test project for the PCL version of TinyIoC.