Merge pull request #18 from dwtkns/patch-1

clearer sizeOffsetPercent comment

added a 'main' to package.json

remove stray console.log

fixed bug in detecting if we should use native scroll

correct download link

Merge pull request #16 from sjwilliams/alternate-events

bump version

provide a callback version for alternate events

optionally use a custom event that's dispatched over the

wip: option for event to monitor

add missing comments

wait until document.ready for initial check

Merge pull request #15 from sjwilliams/feature-loadstarted-class

load started added as soon as laziestloader starts downloading media