adding tools to robustly compute the orientation of three given points
benchmark completed
cleaning + example + documentation page
 cleaning doc and concepts
an adapter to orientation functor in order to have a customizable predicate
2d to 2D
renamming 2D into 2, the number gives the number of points required minus one
 radius functor added for alpha-shapes
 renamming (orientation = general, halfPlane in the linear case), general concept of orientation functor and documentation updated
merging with master
Fixing issue of ambiguity when GenericWriter.h and PointListReader or TableReader are used together
reloading travis
reloading travis
fix some space strange behaviour and normal fix for textured image from embeding
cleaning
changing mode wire to false by default (too slow)
edits in doxygen comments
cleaning up some traces
Merge pull request #778 from dcoeurjo/traceupdate

cleaning up some traces
Merge pull request #776 from kerautret/FixAmbiguityOpFlux

Fixing issue of ambiguity when GenericWriter.h and PointListReader or Ta...