A couple of patches

[dyamon]

These are just a couple of patches that might be useful to someone. I don't want to open a pull request but maybe it is useful to put them in the README, following the suckless approach.

• hide-vacant-tags: this is identical to the patch for dwm. It does not display empty tags;
• mod-indicator: adds a customizable MOD indicator that "lights up" when the modification key is pressed. This is a simplification of Visual keys #28 by @rpmohn;
• right-tags: adds options to move tags to the right in the statusbar and to change the status text alignment.

The "right tags" patch is not directly compatible with the others but using them together should be rather straightforward.

Feedback is appreciated!

[faradayawerty]

great stuff !