Added a LICENSE.
Added a LICENSE.

ianlet/rust-design-patterns,beni55/rust-design-patterns,ianlet/rust-design-patterns,beni55/rust-design-patterns,jdavis/rust-design-patterns,jdavis/rust-design-patterns,jdavis/rust-design-patterns,beni55/rust-design-patterns,jdavis/rust-design-patterns,ianlet/rust-design-patterns