chore(package): update babel-core to version 6.3.13

 http://greenkeeper.io/

package.json

@@ -4,7 +4,7 @@
   "version": "0.0.1",
   "devDependencies": {
     "babel": "~6.1.18",
-    "babel-core": "~6.2.1",
+    "babel-core": "~6.3.13",
     "babel-loader": "~6.2.0",
     "babel-preset-es2015": "~6.1.18",
     "babelify": "~7.2.0",
@@ -68,7 +68,6 @@
     "node": ">=4.2.2"
   },
   "scripts": {
-    "postinstall": "./node_modules/.bin/bower install",
     "postinstall": "export GOPATH=`pwd`/.tools/go && go get github.com/tools/godep"
   }
 }