Updating instructions.

Author: ttvd

README.md

@@ -22,12 +22,12 @@
 
 ## Building
 
-* Tested on Windows and Houdini 18.0
+* Tested on Windows and Houdini 19.0.561
     * Generate a Visual Studio solution using premake:
-        * premake5 --houdini-version=18.0.348 vs2017
+        * premake5 --houdini-version=19.0.561 vs2019
     * Build the GEO Houdini dso GEO_Vox.dll.
     * Place the dso in the appropriate Houdini dso folder.
-        * On Windows this would be C:\Users\your_username\Documents\houdini18.0\dso
+        * On Windows this would be C:\Users\your_username\Documents\houdini19.0\dso
         * Or your HOUDINI_DSO_PATH
 
 ## Usage