Initial implementation of Range, waiting for Metric Configuration
Updated database.

Signed off by: Rafael Manzo <rr.manzo@gmail.com>
Renamed mezuro_range to kalibro_range. Fixed the routes.

Signed off by: Rafael Manzo <rr.manzo@gmail.com>
Unit tests for kalibro_ranges

Signed off by: Daniel Bucher <daniel.bucher88@gmail.com>
Finished KalibroRanges and moved ranges_of action to MetricConfiguration

Signed off by: Daniel Bucher <daniel.bucher88@gmail.com>
Removed method ranges_of from KalibroRange

Also removed HTTP method from desribes on MetricConfigurationController
spec as other controller specs aren't using this as a pattern.
Removed configurations table from schema

Signed off by: Rafael Manzo <rr.manzo@gmail.com>
Removed duplicate reading resource.
Merge pull request #9 from mezuro/range

Range