Remove eclipse preferences that don't work in general and can be regenerated using M2E
Remove Eclipse .project file that can be regenerated using M2E
Remove .classpath file that can be regenerated using M2E
Bump JSONLD-Java version to 0.5.0
Merge pull request #4 from ansell/backport-jena-2.7.2

Update Jena 2.7.2 backport to work with JSONLD-Java-0.5.0
(using a later version of Jena is to be rcommended - Jena now has JSON-LD from jsonld-java as part of the standard distribution).