Moved cs files to their appropriate folders
Removed implementation of classes (sorry @cjones142)

These will be implemented slightly differently
Renamed MainWindow to Editor
Shifted some things around (yay indecision!)
Added a (very basic) buffer object
Mocked up a (very simple) UI to illustrate wpf
Fleshed the buffer class out some
Added Open/Save/SaveAs and hooked open to UI to illustrate usage