diff --git a/.gitignore b/.gitignore
index 0c77a95..772d2fb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 *.swp
 *.pyc
 _rg/*.data
+demo/_rg/*.data
 cscope.*
 *.log
 tags
diff --git a/demo/rgdemo b/demo/rgdemo
deleted file mode 100755
index 7762746..0000000
--- a/demo/rgdemo
+++ /dev/null
@@ -1,5 +0,0 @@
-abs_path() { odir=`pwd`; cd `dirname $1`; pwd; cd "${odir}"; }
-MYDIR=`abs_path "$0"`
-python $MYDIR/src/rg $* -c $MYDIR/demo/_rg/run.yaml
-
-
diff --git a/myrg.bashrc b/myrg.bashrc
deleted file mode 100644
index a19324b..0000000
--- a/myrg.bashrc
+++ /dev/null
@@ -1,4 +0,0 @@
-RG_ROOT=$HOME/devspace/rigger-ng/src
-alias rg='$RG_ROOT/rg'
-alias srg='sudo $RG_ROOT/rg'
-VER=`cat $RG_ROOT/version.txt`
diff --git a/setup/mac.sh b/setup/mac.sh
index 159cfd7..a074519 100755
--- a/setup/mac.sh
+++ b/setup/mac.sh
@@ -1,5 +1,14 @@
 DST=${HOME}/rigger-ng
 PKG=${HOME}/devspace/rigger-ng/src
+
+unlink $DST
 ln -s $PKG $DST
 cd $DST ;
 ./setup.sh mac.py
+cd /usr/local/bin
+sudo unlink rg
+sudo ln -s ${DST}/rg rg
+
+
+echo "Welcome use Rigger-NG! "
+echo "eg: rg help"