ERT-597: Added testdata with FAULTS
ERT-597: Added getNX(), getNY() and getNZ() methods on grid class.
ERT-597: Added four classes for loading faults from FAULTS keyword in ECLIPSE input.
ERT-597: Added tests for fault loading.
Merge pull request #479 from joakim-hove/ERT-597-load-FAULTS

Ert 597 load faults