Move REST client code to AeolusClient namespace
Move code and ensure proper requires

General things concerning AeolusClient namespace are moved to
aeolus_client.rb.

Logging configuration that is done by requiring aeolus_client/base.rb is
marked as FIXME for removal when configuration refactoring is done.

Require aeolus_client/base.rb for resource classes that inherit from it.
Put CLI and Client under a common Aeolus module

These module names were changed:

AeolusCli    -> Aeolus::Cli
AeolusClient -> Aeolus::Client

This scopes our code under common Aeolus module.

To adhere to gem naming conventions in Ruby, the gem name was changed
accordingly:

aeolus_cli -> aeolus-cli

Closes #20.
Merge pull request #41 from jistr/namespacing

Put CLI and REST client into separate modules