search::KdTree accepts different types of KdTree
Added missing word and link

Based on the keypoints found we have to +extract+ features (linked tutorial which explains how features work in pcl)
Add an overload of pcl::io::savePNGFile().

The new function takes sensor_msgs::Image and saves it as a PNG file.
Currently supported are "rgb8", "mono8", and "mono16" image encodings.
Add PointCloudImageExtractor base class and several implementations.

* PointCloudImageExtractorFromRGBField produced a color image based on
  the data in "rgb" field of a point cloud.
* PointCloudImageExtractorFromNormalField produced a color image based on
  the data in "normal" field of a point cloud.
* PointCloudImageExtractorFromLabelField produced a mono image based on
  the data in "label" field of a point cloud.
* PointCloudImageExtractorFromZField produces a mono image based on the
  "z" field of a point cloud.
* PointCloudImageExtractorFromCurvatureField produces a mono image based on the
  "curvature" field of a point cloud.
* PointCloudImageExtractorFromIntensityField produces a mono image based on the
  "intensity" field of a point cloud.
Add an overload of pcl::io::savePNGFile().

The new function takes a field name and uses appropriate
PointCloudImageExtractor subclass to extract an image from the given
field. Currently supported are "normal", rgb", "label", "z",
"curvature", and "intensity" fields.
Add pcd2png application to the "tools" module.
Add tests for Point Cloud Image Extractors.
fixed const iterator errors (win64)
fixed recognition cmake file and added ransac_based recognition headers at old locations which include the headers at the new locations and deprecation warnings.
CMake changes were not included in previous commit.  Now they are
recognition/CMakeLists.txt now installs the old header files along side the new ones.  Only the new header files were installed in the previous commit
Use short file names in Doxygen output

We are reaching the filesystem limit otherwise.
Addition of pkg-config header only file generation for geometry lib
Add missing include and forward declaration.

Forward declaration of vtkRenderWindow was missing in pcl_plotter.h.
Also it is not sufficient to forward declare vtkSmartPointer, the
corresponding header shound be included.
Merge pull request #260 from taketwo/fix-plotter-includes

Add missing include and forward declaration in pcl_plotter.h
Fixed documentation for removeNaNFromPointCloud().

The old (misleading) documentation was copied over from another overload
of this function.
Merge pull request #261 from taketwo/fix-documentation

Fixed documentation for removeNaNFromPointCloud()
Merge pull request #258 from jdt141/master

Addition of pkg-config header only file generation for geometry lib
Merge pull request #246 from jspricke/doxygen_short_names

Short filenames for Doxygen
Modify tutorials to point to the new data sources.