DGtalTools: Release 0.9.2

DGtalTools 0.9.2 global: fix wrong Khalimsky space initialization in Freeman2Img. (Roland Denis, #271) doxygen documentation added for all tools. (David Coeurjolly, Bertrand Kerautret, #258 fix uses of temporaries when ConstAlias is needed. (Roland Denis, #253) renaming of the shapeGenerator folder to generators (David Coeurjolly, #268)) visualisation: meshViewer: add a key to display mesh information about number of vertex/faces. (Bertrand Kerautret, #273) 3dSDPViewer: fix the mesh display which was not given with their original colors. (Bertrand Kerautret, #272) 3dSDPViewer: add the possibility to display a set of point by using different sphere sizes (specified in the input sdp file). (Bertrand Kerautret, #252) sliceViewer: fix bug when imported image domain doesn't contain (0,0,0) point. (Roland Denis, #256) 3dSDPViewer: add an option to display on screen the selected voxel. (Bertrand Kerautret, #257