Update for publishing

package.json

 {
-  "name": "my_factorial",
+  "name": "myfactorial",
   "version": "1.0.0",
   "description": "Calculate factorial",
-  "main": "main.js",
+  "main": "src/myfactorial",
   "scripts": {
     "test": "grunt test"
   },

test/main_test.js

@@ -5,7 +5,7 @@
  * Distributed under terms of the MIT license.
  */
 
-var my_factorial = require('../src/my_factorial');
+var my_factorial = require('../src/myfactorial');
 
 exports.testCalculatesCorrectly = function(test){