fix bubble version in release bundle

bin/build_dist

@@ -66,7 +66,7 @@ if [[ ! -z "${BUBBLE_DIST_HOME}" ]] ; then
     BUILD_NUMBER="dev"
     IS_DEV=1
   fi
-  BUBBLE_VERSION="${BUBBLE_VERSION}.${BUILD_NUMBER}"
+  BUBBLE_VERSION="${VERSION}.${BUILD_NUMBER}"
 
   BUBBLE_DIST_TOP=${BUBBLE_DIST_HOME}/releases/bubble
   BUBBLE_DIST=${BUBBLE_DIST_TOP}/${BUBBLE_VERSION}/$(basename ${ZIP})