fixed typo

formatting

adding options to README

Update README.md

trying to format code block

formatting of md

added 'how to use'

updating description in readme

the originalValues object works correctly now. Just a little copy pasta

created originalValues object to pass around original values instead of

re-setting original values for bg image after it's shown

whoops, wasn't properly replacing original image

changed to using the background image of the selected div. Shouldn't

added repeat, exposure options

initial checkin, raw functionality works