Merge pull request clojure-emacs#112 from bbatsov/mention-melpa

Mentioned the MELPA repository in the README

Author: technomancy

README.md

@@ -5,7 +5,10 @@ Provides Emacs font-lock, indentation, and navigation for the
 
 ## Installation
 
-Available on the [Marmalade repo](http://marmalade-repo.org/packages/clojure-mode).
+Available on both [Marmalade](http://marmalade-repo.org/packages/clojure-mode) and
+[MELPA](http://melpa.milkbox.net) repos.
+
+The latest stable version of `clojure-mode` is available on Marmalade.
 
 If you're not already using Marmalade, add this to your
 `~/.emacs.d/init.el` and load it with `M-x eval-buffer`.
@@ -17,6 +20,20 @@ If you're not already using Marmalade, add this to your
 (package-initialize)
 ```
 
+The version of `clojure-mode` on MELPA is a development snapshot that
+might contain more bugs that usual or experimental work and features
+in progress. Use it at your own risk!
+
+If you're feeling adventurous and you'd like to use MELPA add this bit
+of code instead:
+
+```lisp
+(require 'package)
+(add-to-list 'package-archives
+             '("melpa" . "http://melpa.milkbox.net/packages/") t)
+(package-initialize)
+```
+
 And then you can install:
 
 `M-x package-install [RET] clojure-mode [RET]`