Merge pull request #20 from PoiskSboev/master

I want to propose this changes
Merge pull request #21 from PoiskSboev/master

some new features
Merge pull request #22 from PoiskSboev/master

added new structure elements
booking security info scenarios
Merge pull request #23 from alexander-rogachev/master

booking security info scenarios
fix some errors and comments
Merge remote-tracking branch 'alpha/master'
added create-update-booking and create-update-flight scenarios