anchor.diff:  
           {"errors":{"name":["has already been taken"]}}
   
  +## Tag [/tags/{id}]
  +
   ### Update a tag [PUT]
   
   Requires the user to be an admin.
  
positive.code: + Response 401 (application/json)
  
          {}
  
  
  You can also provide a value for "popular" parameter. With "1", you will receive just popular tags.
  
  + Request
  
      + Header
  
              Accept: application/vnd.api+json;revision=1
              Authorization: Token your-token-here
  
  
  + Response 200 (application/json)
  
          {"tags"=>[{"id"=>1, "name"=>"cycling", "total_projects"=>22, "visible"=>true}], "meta"=>{"page"=>1, "total"=>10, "total_pages"=>1}}
  
  
  ### Create a tag [POST]
  
negative.code:         {}
  
  
  ## User [/users/{id}]
  ### Fetch user information [GET]
  
  + Request
  