basic auth support

Additions

Basic Auth support (takes an array in _harp.jsonfile)

{
  "basicAuth": ["batman:darkknight", "superman:supersecret"]
}

OR just takes a single user cred as a string

{
  "basicAuth": "foo:bar"
}

Fixes

• changes !!! to doctype in init to prepare for jade v1
• CLI impovements

API Breakage

none