fix error in PFH tutorial
Improve ply2pcd help
Merge pull request #633 from xiangxw/fix_tutorial_pfh_estimation

fix error in PFH tutorial
Merge pull request #634 from VictorLamoine/improve_tools

Improve ply2pcd help
Change parameters in region growing tutorial
Merge pull request #636 from Logrus/region-growing-tutorial

Change parameters in region growing tutorial (closes #395)
Fix for double free in KdTreeFLANN after copy operation #335.
Updated homebrew installation

fix #607
Delete deprecated doxygen options
Merge pull request #643 from VictorLamoine/doxygen_warnings

Delete deprecated doxygen options
Merge pull request #618 from jpajarin/master

Fix for double free in KdTreeFLANN after copy operation (closes #335)
Merge pull request #644 from fran6co/patch-6

Updated homebrew installation
Fix: OpenMP with current GCC version doesn't like inherited members
Merge pull request #648 from nizar-sallem/fix_trajkovic

Fix: OpenMP with current GCC version doesn't like inherited members