[minor] Dont install rdoc or ri for gems.
[doc] Update installation instructions for chef@10.18.
Merge pull request #3 from indexzero/fgems

A couple of minor changes
(JE: it doesn't have the qemu-img changes, and the rest LGTM.)
Allow VBoxManage to reside anywhere in $PATH (ie, if you use MacPorts)
patch to get up to newer (3.0.x) rabbitmq releases
getting rabbitmq 3.0 HA working
automatically clean up after removing a head-node
Add in initial cobbler and ufw recipes for a bootstrap node.
Improve recipes for cobbler and ufw and add a new Bootstrap role.
make elasticsearch, carbon, and rabbit use min quorum count
After installation, clear netboot flag in cobbler to avoid install loops.
Merge branch 'master' of https://github.com/bloomberg/chef-bcpc
To ease bootstrapping, rewrite vbox_create.sh to create one bootstrap VM that
will act as Chef server, Cobbler server, DHCP server, and gateway.
workaround bug in stopping & starting carbon too fast
automatically clean up ceph osds from removed nodes
fix bug where brand new osds accidentally get reaped
Add in bootstrap scripts and documentation.
Make it clearer in the documentation about how to retrieve the password for the
PXE-installed VMs.
Do a pass through install documentation.
Fix Markdown link syntax.