creating new branch to hotfix some issues
adding infinite scroll support
changing virtualization technique

if there are more than 250 rows, virtualization is forced. However,
virtualization is now disabled by default for datasets that are less
than 250 rows.
don't stringify your objects without removing ngGridRow from it first.
Updating to 1.7.1

Fixed issue with selection and multiple grids. Can disable
virtualization. ng-grid will detect if less than 50 rows with it off,
and enable it to not lose performance.
Merge pull request #134 from angular-ui/checkboxTemplates

Checkbox templates