Update README.md
Renamed project, refactored namespace dirs
Binded slider and text box (SimpleAnalogDeviceControl now shows value as text)
Add spacing to FakeAnalogSlider
Renaming more things
Further refactorings and renamings
Deleted themes folder
Refactored UI.Gui to UI.Wpf

It's fine for "UI" to be all uppercase, right? "Ui" seems awkward and
isn't clearly an initialism

Also, closes #7
Update assembly info