add grunt test to package.json

Author: André Gaul

README.md

@@ -2,3 +2,5 @@ couchmap-common
 ===============
 
 Show data based on geolocation - this is common code for all CouchMap repos
+
+Unit test status: [![Build Status](https://travis-ci.org/libremap/couchmap-common.png?branch=master)](https://travis-ci.org/libremap/couchmap-common)

package.json

@@ -4,7 +4,7 @@
   "description": "Show data based on geolocation - this is the CouchDB API part",
   "main": "src/index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "grunt test"
   },
   "repository": {
     "type": "git",