invoke DTO's validate() method during conversion

refactored Dto base class into VroomDto interface and SimpleDto implementation
refactored CollectionDto base class into VroomCollectionDto interface and SimpleCollectionDto implementation
added copyright, scm, issuemanagement, and licenses sections
added copyright, scm, issuemanagement, and licenses sections to POM.  updated copyrights.
added copyright, scm, issuemanagement, and licenses sections.  updated copyrights.
changed version back to 1.0-SNAPSHOT
[maven-release-plugin] prepare release vroom-maven-parent-0.9.1
changed version to 0.9.1-SNAPSHOT
changed scm url to https
trying to get maven release plugin to work with github
[maven-release-plugin] rollback the release of vroom-maven-parent-0.9.1
fiddling with maven setup to facilitate maven-release-plugin use with github
github config tweaks
maven github tweaks
[maven-release-plugin] rollback the release of vroom-maven-parent-0.9.1
[maven-release-plugin] prepare release vroom-maven-parent-0.9.1
maven tweaks
[maven-release-plugin] prepare release vroom-maven-parent-0.9.1
maven tweaks
fixed folder structure for vroom dto package
[maven-release-plugin] prepare release vroom-maven-parent-0.9.1