Reformat package.json

We made some manual changes to `package.json` that were not formatted
correctly.

This PR lets `npm` itself reorganize and format the manifest.

package.json

@@ -24,8 +24,17 @@
       "icon": "assets/icon.icns",
       "icon-size": 110,
       "contents": [
-        { "x": 415, "y": 225, "type": "link", "path": "/Applications" },
+        {
-        { "x": 140, "y": 225, "type": "file" }
+          "x": 415,
+          "y": 225,
+          "type": "link",
+          "path": "/Applications"
+        },
+        {
+          "x": 140,
+          "y": 225,
+          "type": "file"
+        }
       ]
     },
     "win": {
@@ -57,8 +66,8 @@
   },
   "devDependencies": {
     "angular-mocks": "^1.4.7",
-    "electron-mocha": "^0.8.0",
     "electron-builder": "^2.6.0",
+    "electron-mocha": "^0.8.0",
     "electron-packager": "^5.1.1",
     "electron-prebuilt": "^0.36.8",
     "gulp": "^3.9.0",