Greenkeeper/eslint 4.15.0 (#65)

* chore(package): update eslint to version 4.15.0

Closes #60

* chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

Author: bkrem

package-lock.json

@@ -83,7 +83,7 @@
     "css-loader": "^0.28.1",
     "enzyme": "^3.2.0",
     "enzyme-adapter-react-16": "^1.1.0",
-    "eslint": "4.12.1",
+    "eslint": "4.15.0",
     "eslint-config-airbnb": "^16.1.0",
     "eslint-config-prettier": "^2.5.0",
     "eslint-loader": "1.9.0",

package.json

@@ -2416,21 +2416,25 @@ eslint-scope@^3.7.1:
     esrecurse "^4.1.0"
     estraverse "^4.1.1"
 
-[email protected]:
-  version "4.12.1"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-4.12.1.tgz#5ec1973822b4a066b353770c3c6d69a2a188e880"
+eslint-visitor-keys@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#3f3180fb2e291017716acb4c9d6d5b5c34a6a81d"
+
+[email protected]:
+  version "4.15.0"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-4.15.0.tgz#89ab38c12713eec3d13afac14e4a89e75ef08145"
   dependencies:
     ajv "^5.3.0"
     babel-code-frame "^6.22.0"
     chalk "^2.1.0"
     concat-stream "^1.6.0"
     cross-spawn "^5.1.0"
-    debug "^3.0.1"
+    debug "^3.1.0"
     doctrine "^2.0.2"
     eslint-scope "^3.7.1"
+    eslint-visitor-keys "^1.0.0"
     espree "^3.5.2"
     esquery "^1.0.0"
-    estraverse "^4.2.0"
     esutils "^2.0.2"
     file-entry-cache "^2.0.0"
     functional-red-black-tree "^1.0.1"
@@ -3972,7 +3976,7 @@ levn@^0.3.0, levn@~0.3.0:
     prelude-ls "~1.1.2"
     type-check "~0.3.2"
 
-[email protected]:
+lint-staged@^6.0.0:
   version "6.0.0"
   resolved "https://registry.yarnpkg.com/lint-staged/-/lint-staged-6.0.0.tgz#7ab7d345f2fe302ff196f1de6a005594ace03210"
   dependencies: