Split deletes from updates at table level and enable filtering/subfiltering tables without primary keys
Fill out Readme
Make pg test configuration configurable
Gitignore local changes to pg_config so people can have their own test env
Slightly tweak example shrinkfile
Clean up double => single quotes
freeze constant hash
Basic uri-based validation on postgres url
Merge branch 'initial_pg_shrink_cli' into wrapup

Conflicts:
	spec/pg_shrink_spec.rb
Minor code review tweaks
Merge pull request #6 from kball/wrapup

Wrapup