Add license

[jibe-b]

BioShaDock's license is stated in the BioShaDock publication

"Apache 2.0" see citation directly in full-text publication

Please add it to the root directory.

[Olivier Sallou]

Add Apache 2.0 license file, closes #16

→ <<cset f42e9495c779>>

[jibe-b]

Thanks!