Add license in Cargo
Add license in Cargo

gkoz/gtk-rs-pango,gkoz/gtk-rs-gtk,rust-gnome/glib,EPashkin/rust-gnome-glib,LordSentox/gtk,gkoz/gtk-rs-cairo,gkoz/rust-gnome-gtk,nicokoch/glib,Susurrus/gtk,rtsuk/cairo,Susurrus/gtk,LordSentox/gtk,gkoz/gtk-rs-glib,insanebits/gtk,gkoz/rust-gnome-gtk,gkoz/gtk-rs-gtk,mitaa/gtk,rust-gnome/gtk,drewet/gtk,rust-gnome/cairo,Susurrus/glib,insanebits/gtk,gkoz/rust-gnome-cairo,EPashkin/rust-gnome-gtk,rust-gnome/gtk,drewet/gtk,EPashkin/rust-gnome-gtk,gkoz/rust-gnome-glib,daa84/gtk,daa84/gtk,mitaa/gtk