Added simple indexes and schemas
Added titan schema creation and tests for it
Added predicates/conditions as we had it before; WIP: I'm going to rethink it
Predicates as label types and values with nice syntax
Added universal conversion for composite predicates to blueprints ones and tested it
Merge branch 'feature/predicates' into feature/schemas
Merge branch 'feature/static-queries' into feature/schemas

Conflicts:
	src/main/scala/ohnosequences/scarph/impl/Titan.scala
	src/test/scala/ohnosequences/scarph/titan/TwitterTitanTest.scala
Merge branch 'feature/schemas' into feature/static-queries