Merge pull request #253 from gsakkis/master

Curl command logging and unicode fix
Implemented GeoDistanceFacet.
Improved changes made in 9c8799f, allowing to pass kwargs to ES when using generate_model
Merge pull request #255 from dourvaris/master

GeoDistanceFacet implementation.
Merge pull request #256 from leo-naeka/master

Improved changes made in 9c8799f, allowing to pass kwargs to ES
Update pyes/queryset.py

Cloning of QuerySet now includes ordering.
Update pyes/queryset.py

Remove duplicate operation.
Update pyes/queryset.py

Include "start" offset in search.
Merge pull request #257 from snotling/master

Fix QuerySet code