Reorganize to allow for alternate datasources
Fix a couple small issues with graphite datasource
Fix graphite datasource
Removed deferred redrawing

It never worked as intended -- redraws would happen as soon as the refresh
method returned, not when all of the data had been updated.
Fix graph handling
Don't pass period to graphite datasource
Implement librato datasource
Merge pull request #64 from eric/backend-refactor

Reorganize to allow for alternate datasources
Add README section for Librato Metrics
Add info about sources
Learn how to typo
Merge pull request #66 from eric/librato-in-the-readme

Add README section for Librato Metrics
Extend TasseoUi options with those specified in the dashboard configuration
Merge pull request #67 from jkew/master

Extend TasseoUi options with those specified in the dashboard configuration