config: modify coverage scripts

Author: icebob

.travis.yml

@@ -8,4 +8,4 @@ node_js:
     - "4"
     - "0.12"
 after_success:
-  - cat ./test/unit/coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js
+  - npm run coverall

package.json

@@ -9,7 +9,8 @@
     "build": "webpack --config webpack.build.config.js",
     "dev": "webpack-dev-server --config webpack.dev.config.js --inline --hot --content-base dev/",
     "lint": "eslint --ext=.js,.vue src",
-    "coverall": "npm run test && cat ./test/unit/coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
+    "coverall": "cat ./test/unit/coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
+    "coverage": "npm run test && npm run coverall",
     "changelog": "conventional-changelog -i CHANGELOG.md -s",
     "docs": "cd docs && gitbook serve",
     "unit": "karma start test/unit/karma.conf.js",