Merge pull request #53 from danoli3/master

Fixed the scope of toCv bug for LLVM compiler in Utilities.h
first 0072 compatible project file
removed old xcode projects
updated all projects for 0072
added toCv(vector<ofVec2f>& points)
keeping the wiki in here
added example demonstrating a technique for registration (alignment) of point clouds using estimateAffine3d and a corresponding wrapper function
added some safety for fitEllipse, and a new toCv for vector<ofVec3f>
ContourFinder: 2 different modes to (not) find holes
Tracker: fix track method not returning anything
FlowPyrLK: several fixes + example

- actually use pyramids, it was passing the plain images
- don't reset features on every frame
- methods to reset/set features from outside
- example demoing how to set features using FAST + filtering
  features to a specific area
Merge pull request #58 from arturoc/bugfix-tracker

Tracker: fix track method not returning anything
Merge pull request #59 from arturoc/feature-findholes

ContourFinder: 2 different modes to (not) find holes
example-flow-externalfeatures: add project files
Merge pull request #60 from arturoc/feature-flowPyrLK

FlowPyrLK: several fixes + example
Utilities: getDepth detects signed types
fix several warnings
Merge pull request #63 from arturoc/bugfix-warnings

fix several warnings + add virtual destructors to base classes
Merge pull request #62 from arturoc/feature-getdepthsigned

Utilities: getDepth detects signed types
Flow: add calls to create pyramids conditionally for cv >2.4.1