Add new useridtype, personNINencrypted
Merge branch 'pr/6' into version-0.9.x-develop
Updated vesion date and documentation after merge

Updated documentation to reflect the new userid-type personNINencrypted.
Updated readme.md with some info on which branch to use for different purposes.
Added attribut pifu_absence_classification in pifu_absence_type element to handle tagging of valid and invalid absence
Merge branch 'master' into develop-latest

Conflicts:
	readme.md
Cleanup readme.md
Merge branch 'pr/10' into develop-latest
Added attribut pifu_absence_classification in pifu_absence_type element to handle tagging of valid and invalid absence
Updated documentation with latest changes

Added pifu_absence_classification
Updated version number to PIFU-IMS 1.0
Merge pull request #12 from snorrelo/develop-latest

Pull Develop latest into Master. Update master to version PIFU-IMS 1.0