Adds a clickable button to the left hand side of the statusbar.
The appearance of this button can be configured by modifying buttonbar in config.def.h
ClkButton is added as the target for clicking this button.
It has been configured for now in config.def.h to spawn dmenucmd when clicked with Button1.
- dwm-statusbutton-20180524-c8e9479.diff (24.05.2018)