fix bug of .vim directory

In the repo, there's no .vim directory, so I think the shell should
create it first.

Author: lengyuefeng

bootstrap.sh

@@ -105,6 +105,10 @@ clone_vundle() {
 create_symlinks() {
     endpath="$HOME/.$app_name-3"
 
+    if [ ! -d "$endpath/.vim/bundle" ]; then
+        mkdir -p "$endpath/.vim/bundle"
+    fi
+
     lnif "$endpath/.vimrc"              "$HOME/.vimrc"
     lnif "$endpath/.vimrc.bundles"      "$HOME/.vimrc.bundles"
     lnif "$endpath/.vimrc.before"       "$HOME/.vimrc.before"
@@ -129,10 +133,6 @@ create_symlinks() {
         ln -sf "$endpath/.vimrc.before.fork" "$HOME/.vimrc.before.fork"
     fi
 
-    if [ ! -d "$endpath/.vim/bundle" ]; then
-        mkdir -p "$endpath/.vim/bundle"
-    fi
-
     ret="$?"
     success "$1"
     debug