Update script_first.sh with git pull of the very pipeline.

script_first.sh

@@ -6,6 +6,11 @@ source /fbp/bb_pipeline_v_2.5/init_vars
 
 set +x
 
+# Update the pipeline with the latest version
+pushd $BB_BIN_DIR;
+git pull;
+popd;
+
 export SUBJID="$1"
 export VISIT="$2"