chore(package): update eslint-plugin-react to version 7.15.0

Closes #141

Author: greenkeeper[bot]

package.json

@@ -72,7 +72,7 @@
     "eslint-plugin-node": "^8.0.1",
     "eslint-plugin-prettier": "3.0.1",
     "eslint-plugin-promise": "^4.0.0",
-    "eslint-plugin-react": "7.12.4",
+    "eslint-plugin-react": "7.15.0",
     "eslint-plugin-standard": "^4.0.0",
     "file-loader": "^3.0.1",
     "flow-bin": "0.91.0",