Create run.sh

README.md would obviously need to change one line to:

` wget -qO- https://raw.githubusercontent.com/scrapinghub/portia/master/install.sh | bash `

So it would the last ` install.sh ` line which has a similar `wget` for `run.sh` - not sure on a better way to do this.
because of this: http://stackoverflow.com/a/24089552/274502