updating README
updated Makefile to create `packaging/output` during build step
Merge pull request #582 from bradrydzewski/master

updated Makefile to create `packaging/output` during build step
adding logging to WS layer until it is more stable
Merge pull request #587 from bradrydzewski/master

adding logging to WS layer until it is more stable
access_token query param is in JWT format
Merge pull request #590 from scrapinghub/bugfix-accesstoken

access_token query param is in JWT format
quicker and less verbose docker installation for publish step
Merge pull request #589 from scrapinghub/docker-binary

Quicker and less verbose docker installation for publish step