fixup jscs version to support plugins

Author: Alexej Yaroshevich

package.json

@@ -30,12 +30,12 @@
     "browserify": "~3.30.2",
     "chai": "^1.9.1",
     "esprima": "^1.2.2",
-    "jscs": ">=1.5.9 <2.0",
+    "jscs": ">=1.8.0 <2.0",
     "jshint": "~2.5.4",
     "mocha": "~1.17.1"
   },
   "peerDependencies": {
-    "jscs": ">=1.3.0 <2.0"
+    "jscs": ">=1.8.0 <2.0"
   },
   "scripts": {
     "lint": "jshint lib test && jscs lib test",