Proxy Support

[ghost]

I currently reside in country that has banned access to Spotify service, Therefor I use proxy on the application to bypass these restriction. The app itself gives ESOCKETTIMEDOUT error, I applied the patch given here #71 but still I have to use a global VPN Connection to be able to use the Lyricfier. I think adding proxy support would be a good idea for me and others who might use this app in work or public networks which requires a proxy to be connected to the internet.