make the main window do os.Exit()

Signed-off-by: Jeff Carr <jcarr@wit.com>

main.go

@@ -95,6 +95,7 @@ func addRepo(grid *gui.Node, path string, master string, devel string, user stri
 func repoworld() {
 	reposwin = gadgets.NewBasicWindow(myGui, "autotypist for GO & git. it types faster than you can.")
 	reposwin.Make()
+	reposwin.StandardExit()
 
 	reposbox = reposwin.Box().NewBox("bw vbox", false)
 	reposgroup = reposbox.NewGroup("go repositories (read from ~/.config/myrepolist)")