Changes

Summary

1. Added cli util to convert sml to r2rml (details)
2. Fresh cli based on picocli and finally proper R2RML support via r2rml-api-jena (details)

Commit c6c4430a6cd5f20627628ad7f0ee65f7ccb0d4e1 by Claus Stadler Added cli util to convert sml to r2rml
	sparqlify-core/src/main/java/org/aksw/sparqlify/web/SparqlifyCliHelper.java
	obda-api-parent/obda-api-examples/pom.xml
	pom.xml
Commit 63fa234976d3df99909603ad02ca5df657c13a4b by Claus Stadler Fresh cli based on picocli and finally proper R2RML support via r2rml-api-jena
	obda-api-parent/obda-api-r2rml/src/main/java/org/aksw/obda/jena/r2rml/impl/R2rmlImporter.java
	sparqlify-core/src/main/resources-filtered/sparqlify.metadata.properties
	sparqlify-cli/src/main/java/org/aksw/sparqlify/cli/main/MainCliSparqlify.java
	sparqlify-core/src/main/java/org/aksw/sparqlify/web/DataSourceSpec.java
	sparqlify-cli/src/main/java/org/aksw/sparqlify/cli/cmd/DataSourceOptions.java
	sparqlify-cli/pom.xml
	obda-api-parent/obda-api-r2rml/src/main/java/org/aksw/obda/jena/r2rml/impl/R2rmlImporterOld.java
	sparqlify-cli/src/main/java/org/aksw/sparqlify/cli/cmd/VersionProviderSparqlify.java
	sparqlify-cli/src/main/java/org/aksw/sparqlify/web/Main.java
	sparqlify-cli/src/main/java/org/aksw/sparqlify/cli/cmd/CmdSparqlifyEndpoint.java
	sparqlify-core/pom.xml
	sparqlify-core/src/main/java/org/aksw/sparqlify/web/SparqlifyCliHelper.java
	obda-api-parent/obda-api-examples/pom.xml
	sparqlify-cli/src/main/java/org/aksw/sparqlify/cli/cmd/CmdSparqlifyMain.java
	obda-api-parent/pom.xml
	pom.xml