typo fix and heading changes
fix indentation error-cause lots of build warnings
4 thumbs per row
thumbnail 4row and hover crossbrowser
nature cleanup and credit
fix for iris dataset
add plot image to gallery and resize
remove plotting for now from example
line_count sort added, some changes reverted
simple changes
small changes
title change for consistency
changed some things back for now
thumbnail 4row and hover crossbrowser
nature cleanup and credit
add plot image to gallery and resize
remove plotting for now from example