Add badges to README

Author: tillarnold

README.md

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-fixed-2d-array
-==============
+# fixed-2d-array [![Code Climate](https://codeclimate.com/github/tillarnold/fixed-2d-array/badges/gpa.svg)](https://codeclimate.com/github/tillarnold/fixed-2d-array) [![Build Status](https://travis-ci.org/tillarnold/fixed-2d-array.svg?branch=master)](https://travis-ci.org/tillarnold/fixed-2d-array) [![devDependency Status](https://david-dm.org/tillarnold/fixed-2d-array/dev-status.svg)](https://david-dm.org/tillarnold/fixed-2d-array#info=devDependencies)
 
 A fixed size 2D array in javascript