add composer

composer.json

@@ -0,0 +1,15 @@
+{
+    "repositories": [
+        {
+            "type": "composer",
+            "url": "http://packages.zendframework.com/"
+        }
+    ],
+    "require": {
+        "php": ">=5.3.3",
+        "zendframework/zend-db": "2.*"
+    }
+    "config": {
+        "vendor-dir": "bundled-libs"
+    }
+}