shaul branch
Merge pull request #1 from shaqo88/Shaul

shaul branch
Eyal merge
Merge branch 'master' of https://github.com/shaqo88/BobProject.git
Add IsRequired property
Merge branch 'Shaul'
Add GroupType enum for choice and sequence + property
Merge branch 'Shaul'
Merge branch 'Eyal' to master