Merge pull request #7 from stapler117/master

stapler117 gitian sigs
langer's 1.8 sigs
Added 1.8.0 signatures for rnicoll.
patricklodder's 1.8.0 sigs
Merge pull request #8 from patricklodder/1.8.0

patricklodder's 1.8.0 sigs
1.8.0 stapler117 gitian sigs