minor changes
removed unwanted files/directories
remaned sample to testing
removed the .swp file and added gitignore
cleaned the mess in ball-detection dir
done with ROI of image
done with setting/resetting of ROI using IplImage
set ROI using cv::Mat
done setting ROI on video
done with hough-line-transformation
renamed _assets to media
minor changes
Readme file added
Merge pull request #1 from sagarrakshe/master

New commits from Sagar