Merge pull request #7 from Nebulai/master

Better pattern detection
Merge pull request #8 from Nebulai/master

Some cleanup. Please never touch find_rect or find_corners. Thank you.
Fixed typo in .gitignore
Added enableAutoExposure to exposure control and enables auto exposure when calling shapedetector
Merge branch 'master' of https://github.com/FireArrow/dotdetector
Added multi-layer calibration. Also improved Ratio Check function. Please do not touch findBox_r... ever...