add clas
update documents regarding the licenses and clas
Update CONTRIBUTING.md
Merge tag 'v1.11'

[maven-release-plugin]  copy for tag v1.11
comment out gpg plugin
Update README.md

update the url of travis
removed useless brackets in JDBCUtil
fix bug when template is null in R2RMLParser
Merge branch 'develop' of github.com:ontop/ontop into develop
clean a bit
cmd for coverting r2rml
re-throw exceptions
Merge branch 'develop' into feature/r2rml
added break in dummyTable
Merge branch 'develop' of github.com:ontop/ontop into develop
Fixed r2rml compliance tests
Merge branch 'feature/r2rml' into develop
Mapping Converter Finished
clean a bit
Merge branch 'feature/r2rml' into develop