Merge pull request #1 from jyaganeh/master

add /query route
add header levels
First pass at adding group_id
add rake to gemfile
prevent crashes when input is missing some fields. fix date filtering on query route. changes all date parameters to the format YYYY-MM-DD
update README with new date format (YYYY-MM-DD)
adds test framework and a very basic test example
add some basic tests for parameter validation
Merge branch 'master' of github.com:aaronpk/rainman
Merge pull request #3 from aaronpk/master

Change date format and small fixes
rename test file to report_test. use test database for tests (defined in config-test.yml). adds a few tests of inserting data
adds more tests for `/report` and adds minitest to gemfile
fix for submitting with null group_id
first batch of tests for the `/query` route
generates some sample data for tests
adds more tests for query route
rejigger config files
fix class names so setup methods don't clobber each other
Merge pull request #4 from aaronpk/add_tests

Add tests for rainman post and query routes
switch to using Sequel gem for all queries