Merge remote-tracking branch 'origin/tagging'

* origin/tagging:
  README updated with tag info
  Added aliases to all composer.json files
  Branch alias, composer info
  Removed branch alias
  Updated to v0.1 in composer files

Author: igorw

composer.json

@@ -12,5 +12,10 @@
     "autoload": {
         "psr-0": { "React\\EventLoop": "" }
     },
-    "target-dir": "React/EventLoop"
+    "target-dir": "React/EventLoop",
+    "extra": {
+        "branch-alias": {
+            "dev-master": "0.1.0"
+        }
+    }
 }