Update README.md

Author: pdavidc

README.md

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 # WorldWind Java
 
+```
+WorldWind team would like to inform you that starting April 5, 2019, NASA WorldWind project will be
+suspended. All the WorldWind servers providing elevation and imagery will be unavailable. While you
+can still download the SDKs from GitHub, there will be no technical support. If you have questions
+and/or concerns, please feel free to email at:
+
+worldwind-info@lists.nasa.gov
+```
+
 [![Build Status](https://travis-ci.org/NASAWorldWind/WorldWindJava.svg?branch=develop)](https://travis-ci.org/NASAWorldWind/WorldWindJava)
 
 3D virtual globe API for desktop Java, developed by NASA. Provides a geographic context with high-resolution terrain, for visualizing geographic or geo-located information in 3D and 2D. Developers can customize the globe's terrain and imagery. Provides a collection of shapes for displaying and interacting with geographic data and representing a range of geometric objects.