chore: add Travis CI + Coveralls

Author: stackjie

.coveralls.yml

@@ -0,0 +1,2 @@
+service_name: travis-ci
+repo_token: CG7bluJ3IFzSIXUR4BKUFOGpwX5fQrGgG

.travis.yml

@@ -0,0 +1,13 @@
+language: node_js
+node_js:
+    - 6
+install:
+|
+    npm install -g npm@latest
+    npm --version
+    npm install --registry http://registry.npmjs.org
+script:
+    - npm run test
+after_script:
+    - npm run coveralls
+

package-lock.json

@@ -11,7 +11,9 @@
     "dev": "node ./build/dev-server.js",
     "build": "webpack --config ./build/prod.config.js && gulp --gulpfile build/minimize.js",
     "build-examples": "webpack --config ./build/examples.prod.config.js",
-    "unit": "cross-env karma start test/unit/karma.conf.js"
+    "unit": "cross-env karma start test/unit/karma.conf.js",
+    "test": "npm run unit",
+    "coveralls": "cat ./test/unit/coverage/lcov/lcov.info | ./node_modules/.bin/coveralls"
   },
   "repository": {
     "type": "git",
@@ -35,6 +37,7 @@
     "babel-preset-es2015": "^6.24.1",
     "babel-register": "^6.22.0",
     "chai": "^3.5.0",
+    "coveralls": "^3.0.0",
     "cross-env": "^5.0.5",
     "css-loader": "^0.28.0",
     "del": "^3.0.0",