Merge pull request #35 from WyriHaximus-labs/event-loop-0.5-and-0.4

Forward compatibility with react/event-loop 1.0 and 0.5 while still supporting 0.4

Author: WyriHaximus

composer.json

@@ -12,7 +12,7 @@
   "require": {
     "php": ">=5.4.0",
     "evenement/evenement": "^3.0 || ^2.0",
-    "react/event-loop": "^0.4",
+    "react/event-loop": "^1.0 || ^0.5 || ^0.4",
     "react/promise": "~2.2",
     "react/promise-stream": "^1.1",
     "react/stream": "^1.0 || ^0.7 || ^0.6 || ^0.5 || ^0.4",