Add initial SSL transport support.
Add initial SSL transport support.

Code is working but hasn't been benchmarked yet.

K2InformaticsGmbH/cowboy,callsign-core/cowboy_hybi00,CrankWheel/cowboy,essen/cowboy,odo/cowboy,grahamrhay/cowboy,yangchengjian/cowboy,dangjun625/cowboy,paulperegud/cowboy,ninenines/cowboy,rabbitmq/cowboy,cad627/cowboy,layerhq/cowboy,Reimerei/cowboy,bobos/ecweb,manastech/cowboy,kivra/cowboy,unisontech/cowboy,nviennot/cowboy,omusico/cowboy,imdeps/cowboy,LineMetrics/cowboy,manastech/cowboy,MSch/cowboy,yangchengjian/cowboy,unisontech/cowboy,acrispin/cowboy,rbalint/pkg-erlang-cowboy,piboye/cowboy,chef/cowboy,bsmr-erlang/cowboy,heroku/cowboy,276361270/cowboy,turtleDeng/cowboy,hairyhum/cowboy,noname007/cowboy,heroku/cowboy,piboye/cowboy,linearregression/cowboyku,LineMetrics/cowboy,LineMetrics/cowboy,lpgauth/cowboy,binarin/cowboy,lpgauth/cowboy,cad627/cowboy,layerhq/cowboy,ferd/cowboyku,pap/cowboy,callsign-core/cowboy_hybi00,venkateshreddy/cowboy,heroku/cowboyku,essen/cowboy,sile/cowboy,binarin/cowboy