Update plugin.json (#34)

Added KB link to plugin

Author: gobelius

plugin.json

@@ -4,6 +4,7 @@
 ,"pluginDescription":"Listen to your customers' honest feedback through a star rating system and custom commenting. Customer feedback is critical in gaining insight and creating better processes whether own a restaurant, small business, school, consulting, or any other type of company."
 ,"pluginKeywords":"feedback,review,rating,stars,comment"
 ,"supportEmail":"support@buildfire.com"
+,"supportSite":"https://learn.buildfire.com/en/articles/1695373-customer-feedback-tutorial"
 ,"control":{
   "content":{
     "enabled":true
@@ -21,4 +22,4 @@
   "features" : [],
   "media": [{ "type": "image-resource", "path": "image.gif" }],
   "languages" : ["en"]
-}
+}