Add basic HTTP auth with `wscat --auth user:pass`
Allow custom HTTP headers in the initiating request
Improve documentation strings for --header and --auth
Merge pull request #274 from pyrtsa/headers

Headers
updated .npmignore

updated `.npmignore` to additionally ignore `bench`, `doc`, `examples` and `test` folders for __production__
Merge pull request #277 from HaykoKoryun/patch-1

updated .npmignore
Merge branch 'master' of https://github.com/einaros/ws