Update eslint-plugin-standard to the latest version 🚀 (#61)

[skip ci] chore(package): update eslint-plugin-standard to version 4.0.0

* chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

Author: greenkeeper[bot]

package.json

@@ -58,7 +58,7 @@
     "eslint-plugin-import": "^2.14.0",
     "eslint-plugin-node": "^7.0.1",
     "eslint-plugin-promise": "^4.0.0",
-    "eslint-plugin-standard": "^3.1.0",
+    "eslint-plugin-standard": "^4.0.0",
     "jest": "^23.5.0",
     "lnk": "^1.1.0",
     "rimraf": "^2.6.2",

yarn.lock

@@ -4444,9 +4444,9 @@ eslint-plugin-promise@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/eslint-plugin-promise/-/eslint-plugin-promise-4.0.0.tgz#bc15a4aa04fa6116113b6c47488c421821b758fc"
 
-eslint-plugin-standard@^3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/eslint-plugin-standard/-/eslint-plugin-standard-3.1.0.tgz#2a9e21259ba4c47c02d53b2d0c9135d4b1022d47"
+eslint-plugin-standard@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-standard/-/eslint-plugin-standard-4.0.0.tgz#f845b45109c99cd90e77796940a344546c8f6b5c"
 
 eslint-plugin-typescript@^0.12.0:
   version "0.12.0"