small export change in pgmWriter in 3d
missing extension in .ih
Merge pull request #662 from kerautret/PGMWriterTinyEdits

Pgm writer tiny edits
add the include dir for qglviewer use in DGtalTools (find some pb when installing qglviewer in user directory from git repo)
Merge pull request #668 from kerautret/cmakeEdits

Small improvement for DGtalTools and qglviewer use
add example image and small update
other edit
cleaning duplicated doc in Statistics.ih
add an assert and moving test file in the good directory
forget CMakeLists changes
Merge pull request #670 from kerautret/StatisticEdit

add an assert and moving test file in the good directory
Merge pull request #669 from kerautret/SmallCleanExample

add example image and small update
Changing INSIDE/OUTSIDE for ImplicitPolynomial3Shape in order to be coherent with ImplicitShape3D
Minor edit of the documentation. Related to the last commit.
Merge pull request #672 from jlevallois/Fix_Polynomial

Changing INSIDE/OUTSIDE for ImplicitPolynomial3Shape
minor corrections for pull request
Merge branch 'master' of https://github.com/DGtal-team/DGtal into masterDGtal
Merge branch 'masterDGtal' into DSLsubsegmentRelease
modifications for pull request