Readme file and small tweak

readme.md

@@ -0,0 +1,7 @@
+# Doty's init files
+
+This is a git repo for your dotfiles. You know, like you do.
+
+On Windows, clone this into your home directory (so that it lives in
+~/Init-Files) and run setup.cmd to get everything linked into the right
+place.

setup.ps1

@@ -6,7 +6,7 @@ function new-link($link, $target) {
   }
 }
 
-$ignore = @(".gitignore", "setup.ps1")
+$ignore = @(".gitignore", "setup.ps1", "setup.cmd")
 
 Get-ChildItem . |
   ? { !$ignore.Contains($_.Name) } |