Merge pull request #1 from kerautret/MeshViewerReAdd

Mesh viewer re add
Merge branch 'master' of github.com:DGtal-team/DGtalTools
add crop
cmakelist
merge from master
 update according generic reader/writer
Merge branch 'master' of github.com:DGtal-team/DGtalTools into cropVolumeTool
merge from master
  NOP reload travis
Merge pull request #45 from kerautret/cropVolumeTool

Crop volume tool
small bug when WITH_MAGICK
Merge pull request #52 from kerautret/debugNewMaster

small bug when WITH_MAGICK
small option update with generic reader
update from DGtal renaming
update from DGtal renaming
update from DGtal renaming
update from DGtal renaming
update from DGtal renaming
update from DGtal renaming
Merge pull request #54 from kerautret/SmallOptionUpdate

small option update with generic reader