Bug in add_widget with auto_position parameter of "false" #31

@troolee If you call add_widget with an auto_position parameter of false, it actually uses the auto_position mode.
Looks like its setting el.attr('data-gs-auto-position', auto_position) and when it reads it back it sets the node.auto_position = "false" as a string.
Later, this get's evaluated to true when it does the check
if (node.auto_position == true){}
if ("false" == true) which ends up going into the block.