<IfModule mod_rewrite.c>
   RewriteEngine on
   #Authorization Headers
   RewriteCond %{HTTP:Authorization} ^(.*)
   RewriteRule ^(.*) - [E=HTTP_AUTHORIZATION:%1]
   SetEnvIf Authorization "(.*)" HTTP_AUTHORIZATION=$1

   RewriteCond %{REQUEST_FILENAME} !-d
   RewriteCond %{REQUEST_FILENAME} !-f
   RewriteRule ^(.*)$ index.php?/$1 [QSA,PT,L]

</IfModule>