LOG: Added remoteIP and username in the log.

And removed unnecessary extra end of line in console log.
FIX: Convert headers in first-letter Capitalize.

To work with CouchDB replication and node.js version < 0.11.6.
Because of [this issue](https://github.com/joyent/node/issues/1954) fixed [here](https://github.com/joyent/node/commit/e6c81bd67986e672b9b253c62ce6d4a519d3a2e1)