Merge pull request #357 from tit/patch-1

Update auth.rb

Author: nahi

sample/auth.rb

@@ -7,5 +7,5 @@
 #c.set_proxy_auth("admin", "admin")
 
 # for WWW authentication: supports Basic, Digest and Negotiate.
-c.set_auth("http://dev.ctor.org/http-access2/", "user", "user")
+c.set_auth("http://dev.ctor.org/http-access2/", "username", "password")
 p c.get("http://dev.ctor.org/http-access2/login")