can not access khronos .xml spec due to robots.txt
python2 main.py --out-path=./ --generator=c does not work

it fails on downloading specs from khronos:
https://cvs.khronos.org/svn/repos/ogl/trunk/doc/registry/public/api/gl.xml

looks like it is blocked by robots.txt

https://www.google.pl/?gws_rd=ssl#q=https:%2F%2Fcvs.khronos.org%2Fsvn%2Frepos%2Fogl%2Ftrunk%2Fdoc%2Fregistry%2Fpublic%2Fapi%2Fgl.xml
