jssjr/carbonate — pull request #28 by seanpquig (2014-09-19 16:56:21+00:00)
Title: updated carbon_sync to be able to handle configs without default 'main' ...

Ran into a little issue using carbon-sync. I was specifying a carbonate.conf without a "main" cluster. It was resulting in the ssh_user method in config.py throwing the following error:

```$ carbon-sync -s source -c carbonate.conf -C old_cluster
Cluster 'main' not defined in carbonate.conf```

This looks to be a simple fix. Tests pass. Great tool!