add readme and some minor config changes

stow/dot-local/bin/stowhome

@@ -1,8 +1,11 @@
 #!/bin/bash
 
 if [ "$*" == "" ]
-do
+then
     echo "you must supply at least one package"
+    echo
+    echo "packages:"
+    cd "$HOME/.config/dotfiles" && find . -maxdepth 1 -type d -not -name ".git" -not -name "." | sed -e 's|^.\/|  - |'
 else
     stow --dir "$HOME/.config/dotfiles" --target "$HOME" --dotfiles $*
 fi