install-files: make symbolic links instead of copying

install-files

@@ -6,12 +6,12 @@ function install_file()
 {
     source="${here}/$1"
     dest="${HOME}/$2"
-    if [ -f "$dest" ]; then
+    if [ -e "$dest" ]; then
         echo "Skipping $1"
     else
         echo "Installing $1"
         mkdir -p $(dirname "$dest")
-        cp "$source" "$dest"
+        ln -s "$source" "$dest"
     fi
 }