Merge pull request #1 from cocaine/master

merge
Initialize logger with correct service args
Merge pull request #8 from m0sth8/master

Initialize logger with correct service args
The Host field of http request is set from Host header in UnpackProxyRequest
Merge pull request #9 from cocaine/feature-host-in-http-request

The Host field of http request is set from Host header in UnpackProxyReq...
Add check of existance session with given number