Move aria-required option to html5 component.

[Finishes #780]

lib/simple_form/components/html5.rb

@@ -7,7 +7,10 @@ module SimpleForm
 
       def html5
         @html5 = true
-        input_html_options[:required] = true if has_required?
+        if has_required?
+          input_html_options[:required] = true
+          input_html_options['aria-required'] = true
+        end
         nil
       end
 

lib/simple_form/inputs/base.rb

@@ -66,7 +66,6 @@ module SimpleForm
 
         @input_html_classes = @html_classes.dup
         @input_html_options = html_options_for(:input, input_html_classes).tap do |o|
-          o['aria-required'] = true if has_required?
           o[:readonly]  = true if has_readonly?
           o[:disabled]  = true if has_disabled?
           o[:autofocus] = true if has_autofocus?