Bug Fix: dep_checker now honoring 'devel_deps' flag for gemfiles
Support multiple branches in the distgit target

Now client is able to specify multiple branches to look for
packages & versions in. Specs updated
Add preliminary logger support

Log Polisher::VersionChecker targets as they are queried and
their results come in

Implements a simple shared wrapper around the ruby logger
class w/ mechanism to set log level from symbol/string
Merge pull request #85 from ManageIQ/logging

Add preliminary logger support