Remove comments

Remove some comments leftover from the original example schema. They
only add confusion since they are meant for direct usage of Solr.
Explicitly set multiValued for each field in default schema

Explicitly set multiValued for each field in the default schema. This is
to prevent any confusion as to what the value is (as there was in #321).

https://github.com/basho/yokozuna/issues/321
Put license header back
Merge pull request #322 from basho/misc/rz/explicit-multi-valued

Explicitly set multiValued for each field in the default schema