first gui commit
moved everything to functions of a big class
renamed main file, worked further on gui.rb
album information are now shown
gui works, TODO improve look, add thread join
download_songs devided in prepare_... and download_song(index)
currently downloaded song title is blue. after download, buttons are enabled again
fixed issue with track numbering
gui now enabled after downloading. errors in download_class are displayed in message window
fixed issuee #2
Merge pull request #4 from flxkrmr/gui

Gui