Added class and os alternates

.oh-my-zsh/plugins/geeknote/README.md

@@ -0,0 +1,12 @@
+## ZSH-Geeknote
+
+[Geeknote](https://github.com/VitaliyRodnenko/geeknote) plugin for oh-my-zsh.
+
+Plugins provides:
+
+- auto completion of commands and their options
+- alias `gn`
+
+You can find information how to install Geeknote and it's available commands on the [project website](http://www.geeknote.me/).
+
+Maintainer : Ján Koščo ([@s7anley](https://twitter.com/s7anley))