Add build and publish scripts

Author: mattphillips

.gitignore

@@ -1 +1,2 @@
 node_modules/
+dist

package.json

@@ -2,7 +2,13 @@
   "name": "deep-object-diff",
   "version": "0.0.1",
   "description": "Deep diffs two objects, including nested structures of arrays and objects, and return the difference.",
+  "main": "dist/index.js",
+  "files": [
+    "dist/index.js"
+  ],
   "scripts": {
+    "build": "babel src -d dist --ignore *.spec.js",
+    "prepublish": "npm run build",
     "test": "mocha \"src/**/*spec.js\" --recursive --compilers js:babel-register",
     "test:coverage": "babel-node ./node_modules/.bin/babel-istanbul cover _mocha -- \"src/**/*spec.js\" --recursive --compilers js:babel-register",
     "test:watch": "npm test -- -w"