Update archive creation script

Better arch

pkg.sh

@@ -14,5 +14,5 @@ id=`git rev-parse --short --verify HEAD`
 name=OcLaunch_${tag}-${id}.tgz
 
 echo "Write in" $name
-git archive master --prefix=$name --format=tgz -o dist/$name
+git archive master --prefix=${name}/ --format=tgz -o dist/$name