feature: add stream target generator

this patch enables to drive the requests from a channel and allow a user to limit the number of concurrent request flying at any given time.
fix: add back shuffle support
fix: add support for stdin
wip: changes required for loadtest
Merge branch 'feature/change-package-name' into develop

* feature/change-package-name:
  wip: changes required for loadtest
  fix: add support for stdin
  fix: add back shuffle support
  feature: add stream target generator
Merge branch 'release/20141006_1447-inputstream'

* release/20141006_1447-inputstream:
  wip: changes required for loadtest
  fix: add support for stdin
  fix: add back shuffle support
  feature: add stream target generator