Feature: slicer silently fails if shard attribute is not present; error aggregation
FIx: query daemon fails on start; upstart script was fixed
Merge pull request #57 from VasilyKolpakov/feature/slicer_error_aggregation

Feature: slicer silently fails if shard attribute is not present; error ...
Merge pull request #59 from VasilyKolpakov/fix/upstart_script

FIx: query daemon fails on start; upstart script was fixed