New features

[detomastah]

AdminBits looks already very nice. New features needed:

• there must be some information about eager loading in readme, or on the other hand - generator should add the paths to autoload. Another option is to prefer autoload like:

autoload :Components,        'simple_form/components'

Also , you can add dynamic eager load in the engine, more info here: http://edgeapi.rubyonrails.org/classes/Rails/Engine.html

• Edit link should be a button
• There should be arrows indicating the order of rows in the header of currently selected soft column.