Added diff test. Implementation of diff for Sesame. Plantain fails.
fix plantain diff, so it deals with NoSuchElementExceptions ( and other problems ). Passes tests.
scalariform
forgot tests

Conflicts:
	rdf-test-suite/src/main/scala/GraphTest.scala
	rdf-test-suite/src/main/scala/RDFOpsTest.scala
Merge pull request #107 from read-write-web/plantainFix

Plantain fix diff implementation #106
[ldpatch] Prefix + Add
[ldpatch] parse LDPatch
[ldpatch] first pass at LD Path semantics
[ldpatch] prevents the parser from capturing a bnode in the graph
[ldpatch] split LDPatch into two separate traits: Grammar and Semantics
[ldpatch] simplified abstract model
[ldpatch] replaced EverythingBefore in the model with a Range starting
at index 0
[ldpatch] updated the grammar to reflect recent changes
[ldpatch] added example from the spec
[binder] scala.Int should be an xsd:Integer, because that's how it's
defined in Turtle
[ldpatch] changed project name s/patch/ldpatch/