add coveralls config

.travis.yml

@@ -14,3 +14,8 @@ cache:
     - node_modules
 
 script: gulp ci
+
+after_script:
+  - istanbul cover ./node_modules/mocha/bin/_mocha --report lcovonly -- -R spec
+  - cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js
+  - rm -rf ./coverage

package.json

@@ -12,6 +12,7 @@
   "devDependencies": {
     "browserify": "^10.0.0",
     "chai": "^2.3.0",
+    "coveralls": "^2.11.2",
     "del": "^1.1.1",
     "gulp": "^3.8.11",
     "gulp-babel": "^5.1.0",
@@ -22,8 +23,10 @@
     "gulp-rename": "^1.2.2",
     "gulp-sourcemaps": "^1.5.2",
     "gulp-uglify": "^1.2.0",
+    "istanbul": "^0.3.13",
     "jshint-stylish": "^1.0.1",
     "mocha": "^2.2.4",
+    "mocha-lcov-reporter": "0.0.2",
     "run-sequence": "^1.1.0",
     "vinyl-source-stream": "^1.1.0"
   }