Modify table search endpoint to use Elasticsearch.
Set up for Elasticsearch as part of fab, requirements, config.
Return to dumping a raw array for now.
Merge pull request #15 from censusreporter/add_elasticsearch

Add ElasticSearch
Don't try to search for releases we don't have data for.
Merge branch 'master' into add_memcache

Conflicts:
	census_extractomatic/api.py
	census_extractomatic/config.py
	requirements.txt
Use memcache to cache geo tiles.
Add memcache to TIGER calls.
Install memcached as part of fabfile.