[Stream] Bug fix: multiple inheritence

Added PHP 5.3.3 to Travis as there was a BC break in PHP ~5.3.8
Took the close method out of Read/Write interfaces into its own
Updated composer files to v0.1.1 tag

Author: cboden

ReadableStreamInterface.php

@@ -5,11 +5,10 @@
 use Evenement\EventEmitterInterface;
 
 // Events: data, end, error, close
-interface ReadableStreamInterface extends EventEmitterInterface
+interface ReadableStreamInterface extends StreamInterface
 {
     public function isReadable();
     public function pause();
     public function resume();
-    public function close();
     public function pipe(WritableStreamInterface $dest, array $options = array());
 }

StreamInterface.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace React\Stream;
+
+use Evenement\EventEmitterInterface;
+
+interface StreamInterface extends EventEmitterInterface
+{
+    public function close();
+}

WritableStreamInterface.php

@@ -5,10 +5,9 @@
 use Evenement\EventEmitterInterface;
 
 // Events: drain, error, close, pipe
-interface WritableStreamInterface extends EventEmitterInterface
+interface WritableStreamInterface extends StreamInterface
 {
     public function isWritable();
     public function write($data);
     public function end($data = null);
-    public function close();
 }

composer.json

@@ -16,7 +16,7 @@
     "target-dir": "React/Stream",
     "extra": {
         "branch-alias": {
-            "dev-master": "0.1.0"
+            "dev-master": "0.1.1"
         }
     }
 }