Adds support for sending queries using ActiveRecord::Base.connection.…#354

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MishaConway wants to merge 3 commits intothiagopradi:masterfrom

MishaConway:feature-send-selects-run-via-execute-to-slaves

Commits on Feb 15, 2016

Adds support for sending queries using ActiveRecord::Base.connection.execute to slaves
MishaConway
committed

Commits on Mar 28, 2016

add spec that verifies that slave group is used when performing select via execute
MishaConway
committed

Commits on Mar 29, 2016

add spec to verify all queries run via execute always go to master even if slave group is configured
MishaConway
committed