try to fixed issue #52

got another error which is:-

ActionController::UrlGenerationError at /settings/credential
No route matches {:action=>"update_password", :controller=>"user"}
fixed error for issue #52

The form appear but will not closed this issu until the page is working
correctly
fixed issue #52 - update password working nicely!

but no notification that the password has been changed!
Merge pull request #57 from AmirolAhmad/issue-#52

Issue #52 fixed!