Merge branch 'masterDC'
Merge branch 'master' of github.com:DGtal-team/DGtalTools
Merge branch 'master' of github.com:DGtal-team/DGtalTools
Merge branch 'master' of github.com:DGtal-team/DGtalTools
Adding volSubSample and fixing build against DGtal master
Moving 2dcontour/curvature* and tangent to estimators/
Merge pull request #11 from dcoeurjo/estimators

Estimators
New meshViewer tools
updating tool to visualize OFS format
Small changes in link to the main DGtal change
Simple conversion tools ofs2off
Simple conversion tools ofs2off
cmakelist to debug
Adding travis hook file
Adding travis hook file
Travis CI added
Resolving conflict
Enhancing travis
Enhancing travis
Enhancing travis