Add a license file

[mathmanu]

Thank you for this good work. Could you please add a licence file?

May be the same license file as caffe:
https://github.com/BVLC/caffe/blob/master/LICENSE

[zimenglan-sysu-512]

hi @mathmanu,

i don't have a plan to add a licence file. so you can use it by yourself for any purpose.

[mathmanu]

If you don't add a license file, it is difficult to use it freely. Please add a license file. If in doubt, please add this license file:
https://github.com/BVLC/caffe/blob/master/LICENSE

That will be a big help.