Update dependencies

Author: Yannick Croissant

package.json

@@ -23,11 +23,11 @@
   "homepage": "https://github.com/yannickcr/eslint-plugin-react",
   "bugs": "https://github.com/yannickcr/eslint-plugin-react/issues",
   "devDependencies": {
-    "babel-eslint": "3.0.1",
+    "babel-eslint": "3.1.1",
     "coveralls": "2.11.2",
-    "eslint": "0.19.0",
+    "eslint": "0.21.0",
     "eslint-tester": "eslint/eslint-tester#c2a1f722cd",
-    "istanbul": "0.3.13",
+    "istanbul": "0.3.14",
     "mocha": "2.2.4"
   },
   "peerDependencies": {