move jslint to devDependencies

Author: germanattanasio

package.json

@@ -28,6 +28,7 @@
     "concept insights",
     "tradeoff analytics",
     "tone analyzer",
+    "retrieve and rank",
     "natural language classifier",
     "dialog",
     "tone_analyzer",
@@ -61,6 +62,7 @@
     "coveralls": "~2.11.2",
     "istanbul": "~0.3.15",
     "nock": "~2.10.0",
+    "jshint": "~2.8.0",
     "qs": "~4.0.0"
   },
   "dependencies": {
@@ -69,7 +71,6 @@
     "csv-stringify": "~0.0.8",
     "extend": "~3.0.0",
     "isstream": "~0.1.2",
-    "jshint": "^2.8.0",
     "object.omit": "~2.0.0",
     "object.pick": "~1.1.1",
     "request": "~2.61.0",