v0.0.11 - git install the requested salt version

If salt_bootstrap_options is empty, salt_version is set & install
method is bootstrap (the default), auto-set salt_bootstrap_options
to install the requested version via git
docs update
v0.0.12 - re-enable the salt --retcode-passthrough
v0.0.13 - on anything less than 2014.2.0 scan the salt-call output for signs of failure
v0.0.14 - pass --retcode-passthrough where we can & always parse the output
Merge branch 'master' of github.com:simonmcc/kitchen-salt