Update README.md

Author: pfitzseb

README.md

@@ -11,3 +11,6 @@ TableView.jl is an [ag-grid](https://www.ag-grid.com/) based table viewer built
 
 ### Limitations
 When trying to display big tables (>10k rows) we switch to lazy-loading additional rows while scrolling, which disables the filtering/sorting that's possible for smaller datasets. It's possible (but not trivial) to write proper backend support for those operations -- PRs would be very welcome.
+
+### ag-grid Enterprise
+Setting the `AG_GRID_LICENSE_KEY` at build *and* run time will use the enterprise distribution instead of the normal community distribution.