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'm not noticing these files on my system.  We can stick it in the .gitignore anyway, but let's simplify it to `*~`.