Add thanks to Jet Brains and YourKit on website. (#2139)

README.md

@@ -48,4 +48,13 @@ and either the forthcoming manuscript describing Hail (if possible):
 
 or the following paper which includes a brief introduction to Hail in the online methods:
 
- - Andrea Ganna, Giulio Genovese, et al. _Ultra-rare disruptive and damaging mutations influence educational attainment in the general population_.  [Nature Neuroscience](http://www.nature.com/neuro/journal/vaop/ncurrent/full/nn.4404.html)
+ - Andrea Ganna, Giulio Genovese, et al. _Ultra-rare disruptive and damaging mutations influence educational attainment in the general population_.  [Nature Neuroscience](http://www.nature.com/neuro/journal/vaop/ncurrent/full/nn.4404.html)
+
+##### Acknowledgements
+
+Hail uses IntelliJ, <a
+href="https://www.yourkit.com/java/profiler/">YourKit Java
+Profiler</a> and is tested with Team City.  We would like to thanks
+Jet Brains and YourKit, LLC for generously supporting open-source
+projects with free licenses.  <img
+src="https://www.yourkit.com/images/yklogo.png" align="right" />