Description:

      Stubs out a new cell widget, its state views and a functional test.
Pass the cell name, either CamelCased or under_scored, and a list 
of states as arguments.

      This generates a cell class in app/cells and view templates in
      app/cells/cell_name.

Example:

    './script/generate widget Posting new'

    This will create an Apotomo Posting cell:
            Cell: app/cells/posting_cell.rb
            Views: app/cells/posting/new.html.erb
Test: test/functional/test_posting_cell.rb