Add support for max_bid in create_adgroup
Merge branch 'master' into adgroup-max-bid

Conflicts:
	facebook.py
Merge pull request #17 from taenyon/update

Add new functions for custom audience and remarketing pixels.
Bump up the version after adding features.
Merge branch 'master' into adgroup-max-bid
actions_group_by should be JSON
Merge pull request #18 from agriffis/actions-group-by

actions_group_by should be JSON
Merge pull request #19 from agriffis/adgroup-max-bid

Add support for max_bid in create_adgroup
Add filtering option parameters to get_conversion_stats_by_adcampaign method.
Merge branch 'master' into update