Thrift-1743: Add Composer.json for Thrift 0.9.x release

Client: PHP
Patch: Xavier HAUSHERR

Adds the composer.json file for the specific release for publishing the php client.

composer.json

@@ -0,0 +1,31 @@
+{
+    "name": "apache/thrift",
+    "description": "Apache Thrift RPC system",
+    "homepage": "http://thrift.apache.org/",
+    "type": "library",
+	"license": "Apache-2.0",
+    "authors": [
+        {
+            "name": "Apache Thrift Developers",
+            "email": "[email protected]",
+            "homepage": "http://thrift.apache.org"
+        }
+    ],
+    "support": {
+        "email": "[email protected]",
+        "issues": "https://issues.apache.org/jira/browse/THRIFT"
+    },
+    "require": {
+        "php": ">=5.3.0"
+    },
+    "autoload": {
+        "psr-0": {"Thrift": "lib/php/src/"}
+    },
+    "target-dir": "lib/php",
+    "minimum-stability": "dev",
+    "extra": {
+        "branch-alias": {
+            "dev-master": "0.9.x-dev"
+        }
+    }
+}