clarify comments in ./build-uberjar

build-uberjar

@@ -45,9 +45,15 @@ all() {
     version && frontend && sample-dataset && uberjar
 }
 
-# Default to running all but let someone specify if desired
-if [ $1 ]; then
-    $1
+# Default to running all but let someone specify one or more sub-tasks to run instead if desired
+# e.g.
+# ./build-uberjar                  # do everything
+# ./build-uberjar version          # just update version.properties
+# ./build-uberjar version uberjar  # just update version.properties and build uberjar
+if [ "$1" ]; then
+    for cmd in "$@"; do
+        $cmd
+    done
 else
     all
 fi