Added documentation to nornir_pools
Updated documentation.  Created some base classes to define expected interfaces for pools and tasks
Merged documentation changes to nornir_pools
Merge branch 'docs'

Conflicts:
	docs/make.bat
	docs/source/api.rst
	docs/source/examples.rst
	docs/source/index.rst
	nornir_pools/__init__.py
Version bump
Merge branch 'dev'