Refs: 18F/foia-hub#84 Updating usagov script to only handle data pull only.

Related to: 18F/foia-hub#142 & 18F/foia-hub#84
- Updating usagov script to only handle data pull only.
- Updating data in the repo w/ a fresh pull.
- Created sample data set from the full set. Adding it to the repo.