added percentage support for absolute mode.
added http://11septiembre1973.latercera.com/
added http://on-moon.ru/
percentage offset for relative mode. references #185
documented percentage mode. references #185
0.6.13
Merge branch 'percentage'
typo
added the skrollr tag to the stackoverflow direct link
Consistently return the correct direction. Fixes #339

The `direction` is now always correct (up or down), no matter if on desktop,
mobile or when using setScrollTop or animateTo.

Also `lastTop` and `curTop` now are always integers (could return
floats on mobile).
0.6.14
Fixed click on links on mobile. fixes #263, #303, #338
added getMaxScrollTop, fixes #238
0.6.15
added missing heading to HISTORY.md