Fixed missing monthly time_unit functionality

Add tests for monthly data

Updated CHANGELOG

Removed unnecessary client var from calls to

Fixed missing newline

Added  time_unit arguments

Filter out '.marvel-kibana' index so it does not appear in logs

Update README.md to show  as viable option

Added datemap with default datestrings.  Switched while loop to be range()

Changed while loop to range().  Using default datemap from curator.py

Updated CHANGELOG