Adds new data sources file "datasource.yml", in addition to database.yml.  Users can continue to use database.yml, this does NOT introduce any incompatibility.
Adds new data sources file "datasource.yml", in addition to database.yml.  Users can continue to use database.yml, this does NOT introduce any incompatibility.

inohiro/bricolage,aamine/bricolage,aamine/bricolage