Changing form_method to a public method. (#1915)

* Changing form_method to a public method. Ref #1824

* crystal tool format brought in changes

Author: russ

src/lucky/tags/form_helpers.cr

@@ -21,7 +21,7 @@ module Lucky::FormHelpers
     input attrs, merge_options(html_options, {"type" => "submit", "value" => text})
   end
 
-  private def form_method(route) : String
+  def form_method(route) : String
     if route.method == :get
       "get"
     else