Merge pull request #90 from ComputationalRadiationPhysics/za-after-end

Zero-access after end, logging
Update documentation and manual
Add domain_write_mpi example and fix cmake
Add comments to example
Update comment style
Merge pull request #91 from ComputationalRadiationPhysics/example-domain-write

Add domain_write_mpi example and fix cmake
Allow zero-size domains with invalid offsets

 - allows to read zero domains with from out-of-bounds offsets
   to ensure that all processes participate in collective requests
Merge branch 'za-after-end' of github.com:ComputationalRadiationPhysics/libSplash into za-after-end