Added install of icons and desktop

data/controllar.desktop

+[Desktop Entry]
+Encoding=UTF-8
+Version=1.0
+Name=ControllAR
+Comment=Remix GUIs for visual feedback
+Exec=/home/flo/INFO/Soft/controllar/build/controllar
+Icon=controllar
+Terminal=false
+Type=Application
+Categories=AudioVideo;
+Name[en_US]=controllar.desktop
+GenericName[en_US]=Remix GUIs for visual feedback
+Comment[en_US]=Remix GUIs for visual feedback
+