2012-10-28: improved Readme to show the push ftp://… capabilities.

improved Readme to show the push ftp://… capabilities.

diff --git a/README.txt b/README.txt
--- a/README.txt
+++ b/README.txt
@@ -22,10 +22,10 @@ Install:
 
 Usage:
 
-$ hg site [-n sitename] -u user:password@ftp.host.tld/path/to/dir
+$ hg push --sitename "sitename" ftp://user:password@ftp.host.tld/path/to/dir
 → that’s how this site gets created.
 
-To upload the site when you push, you can use a hook in .hg/hgrc. This is what I use: 
+To upload the site when you push it anywhere, you can use a hook in .hg/hgrc. This is what I use: 
 
     [hooks]
     post-push = hg site -n site -u user:password@ftp.host.tld/path/to/dir