added getRowData

I thought this was already here.
addColumn now passes RowData as 2nd param
Merge branch 'master' of github.com:optikalefx/OpenJS-Grid
update to root.js to allow methods to return whatever they were supposed to
got rid of my console.log
fixed an html bug in the page save button
updated button styles in pager
added master detail page
updated main demo page a bit. Needs more updating.
Update index.html

fixed a comma
added license
Merge branch 'master' of github.com:optikalefx/OpenJS-Grid