* Add license file
* Cleanup Makefile
* Bump PORTREVISION for added USE_XORG depend
PR\: 221239
Submitted by\: Yuri Victorovich
Reviewed by\: lifanov (mentor), matthew (mentor)
Approved by\: lifanov (mentor), matthew (mentor)
MFH: 2017Q3
Differential Revision\: https://reviews.freebsd.org/DXXXXX
Is adding USE_XORG just a metadata change and therefore should not have revision bump?