I just install Magento2 on my local Mac OSX El Capitan. Apache 2.4.16, PHP Version 5.6.14.
The home page comes up but the admin url shows
Not Found The requested URL /admin_6i2tvi/ was not found on this server.
When I add an index.php in I get the following
Not Found The requested URL /admin_6i2tvi/admin/index/index/key/75c3473832b3e20ed68f01102834853b849d9f07a338681d59fdae3925ebd473/ was not found on this server.
I can see my .htaccess file and rewrite rules are there.