Updated README

Author: bryanjos

README.md

@@ -1,5 +1,4 @@
-Elixir-ESTree
-============
+## Elixir-ESTree [![Documentation](https://img.shields.io/badge/docs-hexpm-blue.svg)](http://hexdocs.pm/estree/) [![Downloads](https://img.shields.io/hexpm/dt/estree.svg)](https://hex.pm/packages/estree)
 
 Defines structs that represent the JavaScript AST nodes from the ESTree spec.