Added zoom entrances and exits as per @ramatsu's request # 186
Correct tag in package.json

Closes #192
Release 3.1.1

Various bugfixes, minor additions
Fixed conflicts and merged
Removed up and down zooms
Updated left and right animations
Adjusted zoomInUp and zoomInDown, re-added up/down zooms
Merge pull request #187 from ofagbemi/master

Added zoom entrances and exits as per @ramatsu's request #186
Correct slideInUp

Fixes #208