title: language detection and url rewrite/redirection
body: <p>My website has two languages: EN (English) and TR (Turkish)
  Now, it is loading as Turkish as default language. There is no any language phrase in the urls. For example our pages like: domain.com/index.php, domain.com/aboutus.php, etc.. </p>
  
  <p>If somebody click the "English" link, then page reload with this phrase: ?language=EN. For example domain.com/aboutus.php?language=EN </p>
  
  <p>After this click, all pages loads as English but we don't see any language phrases in the url too. The other pages loading like services.php, contact.php normally but English..</p>
  
  <p>I need a simple browser language redirector:
  - If a user's browser language is Turkish, then everything is ok, page can load as default Turkish language.
  - If a user's browser language is not Turkish, then pages should load as English via ?language=EN phrase. For example domain.com/aboutus.php?language=EN</p>
  
  <p>The important thing is, this control should happen when first visit of any page (not only index). If a user choose Turkish, then we shouldn't load English pages again.</p>
  
  <p>We can use for this php, htaccess or javascript.</p>
  
  <p>Thank you very much...</p>