fix(package): update lint-staged to version 8.2.0

Closes #169

Author: greenkeeper[bot]

package.json

@@ -20,7 +20,7 @@
     "history": "^4.7.2",
     "husky": "^0.14.3",
     "jest-enzyme": "^5.0.0",
-    "lint-staged": "^6.0.0",
+    "lint-staged": "^8.2.0",
     "lodash": "^4.17.4",
     "material-ui": "^0.20.0",
     "mousetrap": "^1.6.1",