Added some Kernel32 functions

Added some missing functions in Kernel32.java => CreateRemoteThread, WriteProcessMemory and ReadProcessMemory.

Test-Cases for:
-) WriteProcessMemory
-) ReadProcessMemory
(Wasn´t able to run the tests because somehow i get an error from eclipse about JUnit 3 when i try to run it)

There is no Test-Case for CreateRemoteThread because we need LPTHREAD_START_ROUTINE and also some other functions (that should come also if i have more time, or someone else does it instead of me).
MSDN for CreateRemoteThread: http://msdn.microsoft.com/en-us/library/windows/desktop/ms682437%28v=vs.85%29.aspx