Run $CROWBAR_TMP cleanup as normal user

It doesn't seem to be required to run this as root currently as everything in
there is own by the calling user.
Don't assume that markdown is installed in /usr/bin

Because if you're using rvm (like I am), it's installed somewhere else
but otherwise works perfectly fine. Eg:

  /usr/local/rvm/gems/ruby-1.8.7-p371/bin/markdown
Merge pull request #1652 from jamestyj/markdown-bin

Don't assume that markdown is installed in /usr/bin
Adding new files to support 10G network.
adding 10G json examples for hadoop.
Add "Getting started with Crowbar development" guide

Step by step instructions on how to setup a minimal (Rails only) Crowbar
development environment. Includes steps and scripts to setup the dev VM
with qemu-kvm.

I found it rather tricky and time consuming to setup a minimal
development for poking around the Rails app and related tests. This
document will help others save time by providing one central place for
this, with links to the relevant details in other (existing) docs.

It's still missing a couple of things and will need to be improved on
over time.
Update README.dev-and-workflow

Added some detail to "feature" workflow.
Update README.dev-and-workflow
Add reference to virt-manager for GUI qemu-kvm management

Adding the reference to virt-manager as suggested by Vincent Untz.
Add nonfunctional function for getting the state of a pull request in
the CI system.
Add some basic CI state transition helper functions.
Rewrite update_barclamp_gem_cache to not require a chroot anymore.
Add an extra debugging statement.
Add a syntax that is more like version dependencies in gemspecs
Oops, forgot to update barclamp_gem_cache_needs_update.
Merge pull request #1655 from jamestyj/jamestyj-getting-started

Accepted with expectation that we'll ultimately find a good home
Start fixing up how we pull in rubygems for unit testing.
dev setup-unit-tests will always used cached gems by default.
Only extract a crowbar.yml from git if given a rev to extract it from.
Allow setup-unit-tests to check out updated gems if needed.