BC break / Feature: Simplify constructors by making parameters optional. (#10)

The Factory has been removed, you can now create instances of the Client and Server yourself:

// old
$factory = new Factory($loop, $dns);
$client = $factory->createClient('localhost', 9050);
$server = $factory->createSever($socket);

// new
$client = new Client($loop, 'localhost', 9050);
$server = new Server($loop, $socket);

BC break: Remove HTTP support and link to clue/buzz-react instead. (#9)

HTTP operates on a different layer than this low-level SOCKS library. Removing this reduces the footprint of this library.

Upgrading? Check the README for details.

Fix: Refactored to support other, faster loops (libev/libevent) (#12)

Explicitly list dependencies, clean up examples and extend test suite significantly