introducing a tutorial for the retina model
adding retina tutorial
updated tutorial, need spell check, validation, nicer images and a discussion on parameters
updated tutorial, rapid spell check, retina parameters discussion added
added retina code tutorial
updated first image sample
minor update
minor updates for doc redirections and tutorial images size
Fixed typo
Changed visibility of the virtual functions in OnePassStabilizer and TwoPassStabilizer that are derived from StabilizerBase from private to protected to enable stabilizer implementations that are derived from OnePassStabilizer and TwoPassStabilier to properly overwrite these functions
Add ocl::PlatformName to ocl::Info.
updated retina interface for cleaner use, following OpenCV standards
forgot method name update
activated parallelized gradient computation
Merge pull request #1 from albenoit/retina_devel_newinterface

Retina devel newinterface
updated tutorial with new retina interface use
Merge pull request #2 from albenoit/retina_devel

Retina devel
updated comments and new retina interface use
minor chnges for conflict removal
resolved conflicts, updated retina class interface and optimized a heavy retinacolor process