Remove npm install

scripts/activate-markdown

@@ -35,8 +35,6 @@ fi
 
 echo "Activating Markdown support..."
 
-sudo npm -g install instant-markdown-d
-
 cat ~/.vimrc | sed "s/\" Plugin 'suan\/vim-instant-markdown'/Plugin 'suan\/vim-instant-markdown'/" > ~/.vimrc.tmp
 rm ~/.vimrc
 mv ~/.vimrc.tmp ~/.vimrc