[README.md] Add some actual content (gasp)
[README.md] Cleanup on aisle three
Merge pull request #2 from aki--aki/master

Added real battery-level checking
[GTK3] Disable SpinButton when in real-battery mode.
[GTK3] Disable Charging checkbox when in real-battery mode.
[GTK3][common_c] moved all the common stuff out into it's own folder
[GTK3] Made GtkWidget line in main.h match the one in main.c
[GTK3] Added refresh on interval
[GTK3] Made application ID unique
[WindowMaker] Added WindowMaker dockapp (based on GTK3)
[README.md] Added WindowMaker DockApp