Version 0.1.0

Features added:

* ``mist`` command line interface
* Add ``client.backend_from_name``, ``client.backend_from_id`` and ``client.search_backend methods``
* Add ``backend.machine_from_name``, ``backend.machine_from_id``, ``backend.machine_from_ip`` and ``backend.search_machine`` methods
* ``client.backends`` is now a dict with backend ids as dict.keys
* ``backend.machines`` is now a dict with machine ids as dict.keys

Bugs fixed:

* #5 : Fix pip hanging up when installing requirements for the first time 
* #6 : Fix ``mist sync`` when syncing Bare Metal Backends