Update dependencies including React 15.

Author: Rick Wong

package.json

@@ -1,7 +1,7 @@
 {
   "name": "react-inline-css",
   "description": "Inline CSS in your React components, namespaced automatically.",
-  "version": "2.1.1",
+  "version": "2.2.0",
   "license": "BSD-3-Clause",
   "repository": {
     "type": "git",
@@ -20,19 +20,19 @@
     "localhost": "sleep 2; which open && open http://localhost:8080",
     "build": "webpack --verbose --colors --display-error-details --config webpack.client.js",
     "watch-client": "webpack --verbose --colors --display-error-details --config webpack.client-watch.js && webpack-dev-server --config webpack.client-watch.js",
-    "watch": "concurrent 'npm run watch-client' 'npm run localhost'"
+    "watch": "concurrently 'npm run watch-client' 'npm run localhost'"
   },
   "devDependencies": {
-    "babel-core": "6.7.6",
+    "babel-core": "6.11.4",
     "babel-loader": "6.2.4",
-    "babel-preset-es2015": "6.6.0",
-    "babel-preset-react": "6.5.0",
-    "concurrently": "2.0.0",
+    "babel-preset-es2015": "6.9.0",
+    "babel-preset-react": "6.11.1",
+    "concurrently": "2.2.0",
     "json-loader": "0.5.4",
-    "react": "15.0.1",
-    "react-dom": "15.0.1",
+    "react": "15.3.0",
+    "react-dom": "15.3.0",
     "react-hot-loader": "1.3.0",
-    "webpack": "1.13.0",
+    "webpack": "1.13.1",
     "webpack-dev-server": "1.14.1"
   }
 }