Added some of abstruct methods for cursor

Author: hsbt

lib/reline/general_io.rb

@@ -57,6 +57,12 @@ def self.cursor_pos
     Reline::CursorPos.new(1, 1)
   end
 
+  def self.hide_cursor
+  end
+
+  def self.show_cursor
+  end
+
   def self.move_cursor_column(val)
   end