dsl320b authentication bypass - password extract
OSVDB, Base64
Update CONTRIBUTING.md
Land #1815, typo fix.
Ranking should be the same (to GoodRanking)
Land #1818, @wchen-r7's change to Exploit Rank
Land #1799, @m-1-k-3's auth bypass module for Dlink DSL320
Clean up for dlink_dsl320b_password_extractor