Ratchet does not work with guzzle/http 3.6

Getting this error
Object of class Guzzle\Http\Message\Header could not be converted to int
Merge pull request #95 from gavroche/patch-1

Ratchet does not work with guzzle/http 3.6
Fixed type conversion issue with isProtocol method in RFC6455

I encountered the following error while attempting to use Ratchet. The __toString version of the request contained the correct value (13), so I cast the result to a string before casting it to an integer. 

Notice: Object of class Guzzle\Http\Message\Header could not be converted to int in [file system path]\vendor\cboden\ratchet\src\Ratchet\WebSocket\Version\RFC6455.php on line 53
Update HyBi10.php

I encountered the following error while attempting to use Ratchet. The __toString version of the request should contain the proper value, and retrieving the string before converting to an int would prevent this typecasting issue.

Notice: Object of class Guzzle\Http\Message\Header could not be converted to int in [file system path]\vendor\cboden\ratchet\src\Ratchet\WebSocket\Version\HyBi10.php on line 7
Merge branch 'patch-2' of https://github.com/Barbarrosa/Ratchet
Fixing more Guzzle API breaks
Version bump
Guzzle 3.6 conformance

Updated inheritance class to match API change
Use new Guzzle Header class when searching for values
Lock Ratchet into using Guzzle 3.6 to future-proof
Fixed broken unit test with Symfony 2.3
Merge branch 'refs/heads/lib-fixes'
Version bump fixes #99
Merge branch 'refs/heads/master' (v0.2.7) into 0.3

Conflicts:
	CHANGELOG.md
	composer.json
	composer.lock
	src/Ratchet/ConnectionInterface.php
	src/Ratchet/WebSocket/Version/HyBi10.php
	src/Ratchet/WebSocket/Version/RFC6455.php
	src/Ratchet/WebSocket/WsServer.php
Hostname check verification refs #102

host parameter of App now verified on incoming connections