update eslint to use keystone config

.eslintrc

@@ -1,43 +1,8 @@
 {
-	"ecmaFeatures": {
-		"experimentalObjectRestSpread": true,
-		"jsx": true,
-		"modules": true
-	},
-	"env": {
-		"browser": true,
-		"es6": true,
-		"node": true
-	},
-	"plugins": [
-		"react"
-	],
-	"rules": {
-		"comma-dangle": 0,
-		"curly": [2, "multi-line"],
-		"jsx-quotes": 1,
-		"key-spacing": 0,
-		"no-multi-spaces": 0,
-		"no-underscore-dangle": 0,
-		"object-curly-spacing": [1, "always"],
-		"quotes": [2, "single", "avoid-escape"],
-		"react/display-name": 0,
-		"react/jsx-boolean-value": 1,
-		"react/jsx-no-undef": 1,
-		"react/jsx-sort-prop-types": 1,
-		"react/jsx-sort-props": 0,
-		"react/jsx-uses-react": 1,
-		"react/jsx-uses-vars": 1,
-		"react/no-did-mount-set-state": 1,
-		"react/no-did-update-set-state": 1,
-		"react/no-multi-comp": 0,
-		"react/no-unknown-property": 1,
-		"react/prop-types": [1, { "ignore": "children" }],
-		"react/react-in-jsx-scope": 1,
-		"react/self-closing-comp": 1,
-		"react/sort-comp": 1,
-		"react/wrap-multilines": 1,
-		"semi": 2,
-		"strict": 0
-	}
+  "extends": [
+    "keystone"
+  ],
+  "rules": {
+    "no-unused-vars": [2, {"vars": "all", "args": "after-used"}],
+  },
 }

package.json

@@ -15,8 +15,9 @@
   },
   "devDependencies": {
     "babel": "^5.8.23",
-    "eslint": "^1.10.3",
-    "eslint-plugin-react": "^3.16.1",
+    "eslint": "^2.13.1",
+    "eslint-config-keystone": "^2.4.0",
+    "eslint-plugin-react": "^5.2.2",
     "glob": "^7.0.5",
     "gulp": "^3.9.1",
     "isparta": "^4.0.0",