Merge pull request #142 from skrobul/readme-for-plugins

add README file with list of plugins and their short descriptions

plugins/README.markdown

+# Plugins
+* __archlinux__ - The Arch Linux Plugins provides a number of plugins to make using arch easier.
+* __autojump__ - makes navigating filesystem much faster. see [autojump article](https://github.com/joelthelion/autojump/wiki) and [video](https://www.youtube.com/watch?v=tnNyoMGnbKg). bindings only, autojump needs to be installed separately.
+* __brew__  [Homebrew](http://brew.sh/) integration
+* __bundler__ use Ruby's [Bundler](http://bundler.io/) automatically for some commands
+* __django__  - helper for Django Unit tests. Cleans the cached modules as well.
+* __ec2__ - exports env variables for Amazon's EC2 management
+* __emoji__-clock - The current time with half hour accuracy as an emoji symbol
+* __extract__ - Plugin to expand or extract bundled & compressed files
+* __fry__ - starts [fry](https://github.com/terlar/fry) Simple ruby version manager for fish
+* __gi__  - [gitignore.io](http://gitignore.io) cli for fish
+* __jump__ - A port of [Jeroen Janssens' "jump" utility](http://jeroenjanssens.com/2013/08/16/quickly-navigate-your-filesystem-from-the-command-line.html) 
+* __localhost__ - Opens http://localhost:3000 (and other ports) in the default browser
+* __ndenv__  - helpers for [another node.js version manager](https://github.com/riywo/ndenv)
+* __node__ - adds locally installed NodeJS npm binary executable modules to the path
+* __percol__ - browse your fish history with [percol](https://github.com/mooz/percol)
+* __php__ - manage phphttp server 
+* __plenv__  - [plenv](https://github.com/tokuhirom/plenv) perl binary manager integration
+* __pyenv__ - [Simple Python Version Management](https://github.com/yyuu/pyenv) integration
+* __python__ - set of shortcuts to python based utilities (pybeatifyjson - clean JSON files, pyclean - remove old .pyc, pyhttp & pysmtp - simple HTTP & SMTP servers)
+* __rails__ - alias for executing database migrations
+* __rake__ - completions for rake tasks
+* __rbenv__ - Ruby environment/version manager [rbenv](https://github.com/sstephenson/rbenv) 
+* __rvm__ - [rvm](http://rvm.io) ruby version manager
+* __sublime__ - creates 'subl' command line shortcut to launch [Sublime Text editor](http://sublimetext.com/)
+* __tmux__  -  Plugin to start tmux with support for 256 colours
+* __vi-mode__ - Basic vi key bindings emulation for fish
+* __z__ - integration with [z](https://github.com/rupa/z) (autojump alternative)