create a readme

README.md

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+# candybar
+a stupidly simple modular statusbar
+
+## usage
+**candybar** only outputs the text that should be shown on the bar, which makes it useable on different applications.
+### usage with dwm
+add the following to your ~/.xinitrc:
+```sh
+while true; do
+	xsetroot -name "$(candybar)"
+	sleep 2
+done
+```
+### usage with tmux
+add the following to your ~/.tmux.conf:
+```tmux
+set -g status-interval 2
+set -g status-right-length 100
+set -g status-right "#(candybar)"
+```