Update included SDK libs to current.

[gdunstone]

SDK version in this project is 2.0.3.
Current SDK version is 2.2.4.
I can probably update it to 2.2.2 (at least for linux64) and make a pull request in a bit.

Also the copyright date for Leap on the readme needs to change, as it is 2015.

[gdunstone]

I updated it to 2.2.2, because 2.0.3 isnt as reliable and smooth (and its the version in the AUR atm).