ADD Pre & Post Field Update Hooks
FIX Data Header Button Styling
Add Error Notification on Failure
Clarify documentation.
ADD unit tests for pre, post-success, and post-error methods
Merge pull request #11 from nickburns2006/post-xeditable-function

ADD Pre & Post Field Update Hooks
Merge pull request #12 from nickburns2006/fix-button-styling

FIX Data Header Button Styling
Release v0.3.3
CHANGE Pager to be optional
Remove pager creation in spec.
Merge pull request #14 from nickburns2006/fix-pager-required

CHANGE Pager to be optional