Add source the setup-opt-robotpkg.sh file.

download.html

@@ -85,3 +85,10 @@ export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$ROBOTPKG_BASE/lib/pkgconfig/
 export ROS_PACKAGE_PATH=$ROS_PACKAGE_PATH:$ROBOTPKG_BASE/share:$ROBOTPKG_BASE/stacks
 export CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH:$ROBOTPKG_BASE
 ```
+
+If you name the script **setup-opt-robotpkg.sh** then the variables are setup by
+sourcing the file:
+```bash
+source setup-opt-robotpkg.sh
+```
+