Transition to CMake and bundle Tisean

I updated tdetools to use cmake and bundled the necessary part of Tisean directly in the project. MIT and GPL are friends: it should not conflict. 

    sudo apt-get install libopencv-dev libann-dev libboost-dev cmake 

should be enough to satisfy the dependencies. 

I also updated the README to reflect these changes. 

The orignal code has not been altered except for the #include directives to opencv.