Merging from dev - #5

…tions.

This patch will try to use the old token and if fails a new one will be placed
at self._params. It also allows users to pass extra parameters to the
given connection too.

In [5]: myring.history(limit=1)
params ==> %s {'api_version': '9', 'auth_token': '3pJyU1nuxctB56sHWg9W', 'limit': '2'}
self._params ==> %s {'api_version': '9', 'auth_token': '3pJyU1nuxctB56sHWg9W', 'limit': '2'}

.... REFRESHING auth_token because the older has expired ....

params ==> %s {'api_version': '9', 'auth_token': 'SYDCAsQzAzGF1JBZJG82', 'limit': '2'}
self._params ==> %s {'api_version': '9', 'auth_token': 'SYDCAsQzAzGF1JBZJG82', 'limit': '2'}
Out[5]:
[{'answered': False,
  'created_at': '2017-02-12T00:42:05.000Z',
  'doorbot': {'description': 'Front Door', 'id': 1572563},
  'events': [],
  'favorite': False,
  'id': 1234567,
  'kind': 'motion',
  'recording': {'status': 'ready'},
  'snapshot_url': ''}]