Allow constructor to have a non-empty set of nodes
Moving idealsLattice method to ConceptLattice class
Resolve conflicts
Merge branch 'master' of github.com:kbertet/java-lattices into dagraph-coherence
Correct unit test for new constructor
Remove test for openjdk6 until JF has corrected its code
Merge pull request #14 from chdemko/dagraph-coherence

Dagraph coherence
Update README.md
Update README.md