[doc] plugin doc update

Plugins.md

@@ -9,6 +9,9 @@ name = 'Example plugin'
 description = 'This plugin extends the suggestions with the word "example"'
 default_on = False  # disable by default
 
+js_dependencies = tuple()  # optional, list of static js files
+css_dependencies = tuple()  # optional, list of static css files
+
 
 # attach callback to the post search hook
 #  request: flask request object
@@ -23,14 +26,13 @@ def post_search(request, ctx):
 
  * Pre search hook (`pre_search`)
  * Post search hook (`post_search`)
+ * Result hook (`on_result`) (is called if a new result is added (see https_rewrite plugin))
 
 Feel free to add more hooks to the code if it is required by a plugin.
 
 
 ### TODO
 
- * Client side dependency handling
  * Better documentation
  * More hooks
   * search hook (is called while searx is requesting results (for example: things like math-solver), the different hooks are running parallel)
-  * new result hook (is called if a new result is added (for example: https-rewrite))