Fix #283 : Overriding properties from a property file
Merge pull request #286 from hazelcast/feature/property-overrides

Fix #283 : Overriding properties from a property file
Writes the performance to a text file
Writes the performance to a text file
Merge branch 'master' of github.com:hazelcast/hazelcast-stabilizer
Fixed #282: improved logging
Merge pull request #288 from hazelcast/feature/282-waiting-completion-improvement

Fixed #282: improved logging
WIP, better benchmarking support.
Infrastructure preparation.