Wraps GitHub User Public Keys API.
$keys = $client->me()->keys()->all();
Returns a list of public keys for the authenticated user.
$key = $client->me()->keys()->show(1234);
Requires authentication.
$key = $client->me()->keys()->create(array('title' => 'key title', 'key' => 12345));
Adds a key with title 'key title' to the authenticated user and returns a the created key for the user.
Requires authentication.
$client->me()->keys()->remove(12345);