add coveralls tooling

.travis.yml

@@ -1,3 +1,5 @@
 language: node_js
 node_js:
-  - "node"
+  - "node"
+after_success:
+  - npm run coveralls

README.md

@@ -1,6 +1,7 @@
 # MixItUp 3
 
 [![Build Status](https://travis-ci.org/patrickkunka/mixitup.svg?branch=v3)](https://travis-ci.org/patrickkunka/mixitup)
+[![Coverage Status](https://coveralls.io/repos/github/patrickkunka/mixitup/badge.svg?branch=v3)](https://coveralls.io/github/patrickkunka/mixitup?branch=v3)
 
 MixItUp is a high-performance, dependency-free library for animated DOM manipulation, giving you the power to filter, sort, add and remove DOM elements with beautiful animations.
 

package.json

@@ -10,12 +10,14 @@
   "main": "./dist/mixitup.min.js",
   "scripts": {
     "test": "mocha ./tests/unit/main.js",
-    "cover": "istanbul cover _mocha ./tests/unit/main.js"
+    "cover": "istanbul cover _mocha ./tests/unit/main.js",
+    "coveralls": "npm run cover -- --report lcovonly && cat ./coverage/lcov.info | coveralls"
   },
   "devDependencies": {
     "chai": "^3.5.0",
     "chai-as-promised": "^5.3.0",
     "chai-shallow-deep-equal": "^1.4.0",
+    "coveralls": "^2.11.14",
     "gulp": "^3.8.8",
     "gulp-jscs": "^4.0.0",
     "gulp-jshint": "^1.8.5",
@@ -30,6 +32,7 @@
     "merge-stream": "^0.1.7",
     "mixitup-build": "git://github.com/patrickkunka/mixitup-build.git",
     "mocha": "^3.0.2",
+    "mocha-lcov-reporter": "^1.2.0",
     "vinyl-buffer": "^1.0.0",
     "vinyl-source-stream": "^1.1.0"
   }