feature(package) add coverage

Author: coderaiser

.gitignore

@@ -1,3 +1,4 @@
 node_modules
 npm-debug.log*
+.nyc_output
 

.travis.yml

@@ -5,7 +5,7 @@ node_js:
 
 script:
   - npm run codestyle
-  - npm test
+  - npm run coverage
 
 notifications:
     email:

package.json

@@ -12,7 +12,8 @@
     "jscs": "jscs --esnext lib test",
     "jshint": "jshint lib test",
     "codestyle": "npm-run-all jshint jscs",
-    "test": "tape test/*.js"
+    "test": "tape test/*.js",
+    "coverage": "nyc npm test"
   },
   "repository": {
     "type": "git",
@@ -30,6 +31,7 @@
     "jscs": "^2.7.0",
     "jshint": "^2.8.0",
     "npm-run-all": "^1.4.0",
+    "nyc": "~5.0.1",
     "tape": "^4.2.2"
   }
 }