Review changes made for Issue #53 CMake

I've made all the CMakeList files the project needs. I managed to get the project to build, compile and install. However, when I try to run the qmlscene ui/main.qml, it can't seem to find the directories where the plugins are installed. Could you have a look?
I've removed all the files that I think are directly involved in the plugin .so, the other files get includede through the source code on build. So I removed from all CMakeLists files where applicable.