upgrade some devDeps

package.json

@@ -102,7 +102,7 @@
     "eslint-plugin-markdown": "*",
     "eslint-plugin-react": "^6.1.2",
     "eslint-tinker": "^0.4.0",
-    "history": "^3.0.0",
+    "history": "^4.4.0",
     "jest-cli": "^16.0.2",
     "jsonml-to-react-component": "~0.2.0",
     "jsonml.js": "^0.1.0",
@@ -123,7 +123,7 @@
     "react-dom": "^15.0.0",
     "react-github-button": "^0.1.1",
     "react-intl": "^2.0.1",
-    "react-router": "^2.0.0",
+    "react-router": "^3.0.0",
     "react-stateless-wrapper": "^1.0.2",
     "react-sublime-video": "^0.2.0",
     "reqwest": "^2.0.5",