moving release history out of README and into wiki
adding some basic AMD / No-AMD getting started documentation to the README
adding an additional link / reference to code@ to issues & feature requests in the readme
fixing a hanging tree bug from issue #123
Display column sort indicator set through datagrid construction

This fixes the issue where setting `dataOptions.sortProperty` at
datagrid construction time did not alter the column headers to show
the sorting (though it did pass it to the `data` callback, causing
the data itself to be sorted).
Merge pull request #289 from dougwilson/fix/datagrid-initial-column-sort

Display column sort indicator set through datagrid construction
fixing readme typos
Release 2.4.2