Fix OSRM cookbook

Needs a few tweaks to get it working with the latest version of osrm.

- remove Memory config from extractor.ini
- fix daemon command line in upstart job to add -c flag & location of .osrm file
- osrm extract needs -p flag adding
Fix OSRM prepare command line

osrm-prepare now seems to require -r and -p flags for the restrictions & profile files. Add them!
Merge pull request #2 from transportapi/master

Command line changes for osrm