Merge pull request #22 from kamalaknn/patch-1

Include only necessary files for npm package

Author: rwjblue

package.json

@@ -3,6 +3,9 @@
   "version": "1.1.4",
   "description": "Retrieve current sha and branch name from a git repo.",
   "main": "index.js",
+  "files": [
+    "index.js"
+  ],
   "scripts": {
     "test": "mocha tests",
     "preversion": "npm test",