Merge branch 'develop'
Merge pull request #2 from qiubix/master

Changes in SIFTAdder
Add model multiplicity when added cloud reduced
Refactor times->multiplicity, add feature index.
Merge branch 'develop'
Merge branch 'master' of github.com:qiubix/PCL
PCD readering & displaying cleanup
PC2Octree start
Messy, but working iteration in the Octree
Counting points in leaf nodes.
Iteration in Octree based on SIFT cloud.
Remove huge data files from git tracking.
Merge pull request #4 from qiubix/master

Handling SIFT cloud with Octree.
Octree templated with XYZSIFT and int (as branch container). Code cleanup.
Update - code cleanup
wip on ICP
wip on ICP
wip on ICP
Add pointId to PointXYZSIFT structure.
Set feature ID in SIFTAdder