Change response code for unauthorized access from 403 to 401
Remove ETag header from DELETE requests
Change response code for successful DELETE requests from 204 to 200
Set 'Expires' header to 0 for all responses
Set response code for newly created objects to 201
Value for 'Expires' header needs to be a string
New directory listing format
Set Content-Length header for documents on GET
HEAD requests for documents
HEAD requests for directory listings
Last-Modified header is not needed anymore
If-None-Match header may contain multiple revisions
Code formatting
Merge branch 'master' into rs_spec_02

Conflicts:
	lib/remote_storage/riak.rb
	spec/directories_spec.rb
Respond with 409 on naming collisions between documents and folders
Merge pull request #38 from 5apps/rs_spec_02

Support for remoteStorage -02 spec