Add examples/arcyon/count_reviews_per_date

New script to output reviews per calendar date and month.

Test Plan: ran the script against local instance
Increase sample size in examples/arcyon/count*

Double the number of reviews per query and consider 10,000 reviews in
each count that we do.

Test Plan: ./examples/arcyon/ $ ./count*
Fix aoncmd_comment: actually use conduit args

Actually use the arguments for specifying how to connect to conduit.

Test Plan:
erase .arcconfig, comment and supply --uri
Arcyon show-config: support conduit args

Support the same conduit args that the other Arcyon commands do, this
allows show-config to be useful in debugging conduit connection issues.

Test Plan: $ arcyon show-config --uri http://127.0.0.1
Pass args to arcyon invocation in examples/arcyon

To make the scripts easier to use, remove the requirement for a valid
.arcconfig by passing on parameters to the script to the invocation of
arcyon.

Test Plan:
erase .arcconfig
examples/arcconfig/ $ *.sh --uri http://127.0.0.1