Updated README with MELPA info.

README.md

@@ -1,5 +1,7 @@
 # flycheck-vale
 
+[![MELPA](http://melpa.org/packages/flycheck-vale.svg)](http://melpa.org/#/flycheck-vale)
+
 This package provides [flycheck](http://www.flycheck.org/) integration
 for [vale](https://github.com/ValeLint/vale). Flycheck is an Emacs system for
 on-the-fly syntax checking. Vale is a natural language linter. So with
@@ -9,6 +11,8 @@ Right now `flycheck-vale` is very new and unpolished. Ideas, PRs, etc. are welco
 
 ## Quickstart
 
+Install `flycheck-vale` from MELPA using `package-install` or something equivalent.
+
 To use `flycheck-vale` just `require` it and run `flycheck-vale-setup`:
 
 ```emacs-lisp