Merge pull request #154 from clue-labs/compat

Forward compatibility with upcoming Socket v0.6 and v0.7

Author: clue

composer.json

@@ -6,7 +6,7 @@
     "require": {
         "php": ">=5.3.0",
         "ringcentral/psr7": "^1.2",
-        "react/socket": "^0.5",
+        "react/socket": "^0.7 || ^0.6 || ^0.5",
         "react/stream": "^0.6 || ^0.5 || ^0.4.4",
         "react/promise": "^2.0 || ^1.1",
         "evenement/evenement": "^2.0 || ^1.0"