Add check of existance session with given number
Add some states for services
Revert "Add some states for services"

This reverts commit 707a343ec14e57fb6def57fc2c524eb1f1da9872.
Add reconnector to logger
Add reconnector for services
Merge branch 'master' into develop

Conflicts:
	cocaine/logger.go
Parse flags in NewWorker. It avoids cmd args clashing, when somebody uses cocaine for cli. Use --locator as default locator instead of wrong localhost:10053
fix stupid mistake with flag reference
Add travis.yml
Merge branch 'develop'

Conflicts:
	cocaine/logger.go
	cocaine/service.go