Let's use the logo.

I wasn't setting the application logo at all, so it was ugly. Now it
uses the Blue Shoes logo. The logo still needs some work, but it's good
enough for now.

lib/blue_shoes/app.rb

@@ -4,6 +4,9 @@ class App < Qt::Application #:nodoc: all
     def initialize opts = {}, blk #:nodoc:
       super ARGV
 
+
+      set_window_icon(Qt::Icon.new "#{File.expand_path(File.dirname(__FILE__))}/../../static/blue_shoes.jpg")
+
       height = opts[:height] || 200
       width = opts[:width] || 400
       resizeable = opts[:resizable].nil? ? true : false