Version bug fix

Incrementing version info

Bug fixing

Fixed bug in dpn-services.ttl where it used an old reference to wl:

Also introduce simple travis CI build to do basic checks on ttl files.

v0.7.0

• Adding additional service types
• Adding first cut of CSW Crawler that takes ISO 19115 metadata and outputs DPN service triples
• Adding web app that demonstrates how to leverage SPARQL endpoint with DPN service triples