Allow remote url to be passed to the ADD instruction within the builder
Fix issue EXPOSE override CMD within builder
Move isUrl to utils.IsURL
Allow to docker build URL
Move the docker build URL form client to server, prepare for GIT support
Implement build from git
Update documentation for docker build
Make the progressbar take the image size into consideration
Make the progressbar human readable
Allow multiple tab/spaces between instructions and arguments
Fix typo in docs
Updated build usage
Remove run from the ADD instruction
Remove run from non-running commmands
Merge branch 'master' into builder_server-3

Conflicts:
	buildfile.go
	commands.go
	docs/sources/api/docker_remote_api.rst
Fix issue with ADD
Add build UT
fix auth in case you change your password on index.io
update docs, remove config file on 401
Merge branch 'master' into improve_progressbar_pull