Update peerDependencies requirements

Author: Yannick Croissant

package.json

@@ -34,7 +34,7 @@
     "mocha": "2.5.3"
   },
   "peerDependencies": {
-    "eslint": "^2.13.1 || ^3.0.0"
+    "eslint": "^2.0.0 || ^3.0.0"
   },
   "engines": {
     "node": ">=0.10"