add form text

src/mechanize/form.cr

@@ -1,6 +1,7 @@
 require "./form/field"
-require "./form/check_box"
 require "./form/radio_button"
+require "./form/check_box"
+require "./form/text"
 
 class MechanizeCr::Form
   getter fields     : Array(FormContent::Field)
@@ -78,6 +79,8 @@ class MechanizeCr::Form
         checkboxes << FormContent::CheckBox.new(html_node, self)
       when "radio"
         radiobuttons << FormContent::RadioButton.new(html_node, self)
+      when "text"
+        fields << FormContent::Text.new(html_node)
       else
         fields << FormContent::Field.new(html_node)
       end

src/mechanize/form/check_box.cr

@@ -1,4 +1,3 @@
-require "./radio_button"
 class MechanizeCr::FormContent::CheckBox < MechanizeCr::FormContent::RadioButton
   def check
     @checked = true

src/mechanize/form/text.cr

@@ -0,0 +1,2 @@
+class MechanizeCr::FormContent::Text < MechanizeCr::FormContent::Field
+end