add coverall

.coveralls.yml

@@ -0,0 +1,2 @@
+service_name: travis-pro
+repo_token: 99UNur6O7ksBqiwgg1NG1sSFhmu78A0t7

.travis.yml

@@ -4,4 +4,4 @@ node_js:
   - "0.12"
   - "0.11"
   - "0.10"
-script: ./node_modules/.bin/mocha
+script: ./node_modules/.bin/mocha -u bdd && npm run cov

package.json

@@ -5,7 +5,8 @@
   "main": "index.js",
   "scripts": {
     "start": "npm publish .",
-    "test": "./node_modules/.bin/gulp"
+    "test": "./node_modules/.bin/gulp",
+    "cov":"./node_modules/.bin/istanbul cover ./node_modules/mocha/bin/_mocha --report lcovonly -- -R spec && cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js && rm -rf ./coverage"
   },
   "repository": {
     "type": "git",
@@ -23,9 +24,11 @@
   "license": "MIT",
   "devDependencies": {
     "chai": "^2.3.0",
+    "coveralls": "^2.11.2",
     "gulp": "^3.9.0",
     "gulp-mocha": "^2.1.2",
     "gulp-watch": "^4.2.4",
+    "istanbul": "^0.3.16",
     "mocha": "^2.2.5",
     "mongoose": "^4.0.4"
   }