fix(package): update eslint-plugin-react to version 7.0.0

Author: greenkeeper[bot]

package.json

@@ -38,7 +38,7 @@
     "es6-promise": "^4.1.0",
     "eslint": "^3.1.1",
     "eslint-plugin-babel": "^4.1.1",
-    "eslint-plugin-react": "^6.10.3",
+    "eslint-plugin-react": "^7.0.0",
     "github-slugger": "^1.0.1",
     "highlight.js": "^9.2.0",
     "isomorphic-fetch": "^2.2.0",