fixed init.sh for real this time

init.sh

@@ -1,7 +1,7 @@
-mkdir .backup
-ln -s vimrc ~/.vimrc
-ln -s tmux.conf ~/.tmux.conf
-ln -s zshrc ~/.zshrc.local
-ln -s gitconfig ~/.gitconfig
-ln -s screenrc ~/.screenrc
+mkdir -p ~/.backup
+ln -snf `pwd`/vimrc ~/.vimrc
+ln -snf `pwd`/tmux.conf ~/.tmux.conf
+ln -snf `pwd`/zshrc ~/.zshrc.local
+ln -snf `pwd`/gitconfig ~/.gitconfig
+ln -snf `pwd`/screenrc ~/.screenrc
 wget -O ~/.zshrc http://git.grml.org/f/grml-etc-core/etc/zsh/zshrc