Add codeclimate labels. (#1050)

@mistercrunch, do you know how to change the text on the labels?

README.md

@@ -5,7 +5,9 @@ Caravel
 [![Build Status](https://travis-ci.org/airbnb/caravel.svg?branch=master)](https://travis-ci.org/airbnb/caravel)
 [![PyPI version](https://badge.fury.io/py/caravel.svg)](https://badge.fury.io/py/caravel)
 [![Coverage Status](https://coveralls.io/repos/airbnb/caravel/badge.svg?branch=master&service=github)](https://coveralls.io/github/airbnb/caravel?branch=master)
+[![JS Test Coverage](https://codeclimate.com/github/airbnb/caravel/badges/coverage.svg)](https://codeclimate.com/github/airbnb/caravel/coverage)
 [![Code Health](https://landscape.io/github/airbnb/caravel/master/landscape.svg?style=flat)](https://landscape.io/github/airbnb/caravel/master)
+[![Code Climate](https://codeclimate.com/github/airbnb/caravel/badges/gpa.svg)](https://codeclimate.com/github/airbnb/caravel)
 [![PyPI](https://img.shields.io/pypi/pyversions/caravel.svg?maxAge=2592000)](https://pypi.python.org/pypi/caravel)
 [![Requirements Status](https://requires.io/github/airbnb/caravel/requirements.svg?branch=master)](https://requires.io/github/airbnb/caravel/requirements/?branch=master)
 [![Join the chat at https://gitter.im/airbnb/caravel](https://badges.gitter.im/airbnb/caravel.svg)](https://gitter.im/airbnb/caravel?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)