don't chop off classification bits #403
update the pcl documentation to include ground filtering example and explanation of parameters
Merge pull request #404 from chambbj/pcl-doc-update

update the pcl documentation to include ground filtering example and explanation of parameters
Make a simple hexbin test.
Merge branch 'point-context' of https://github.com/PDAL/PDAL into point-context
Merge branch 'master' of https://github.com/PDAL/PDAL into point-context

Conflicts:
	src/drivers/las/Reader.cpp
Add hexbin output file with consistent origin.