Add README.md to components

Author: nguyennv

README.md

@@ -0,0 +1,17 @@
+Zimbra Common Component
+=======================
+Zimbra Common provides utility classes for Zimbra Soap Api like XML processing, typed collections...
+
+## Installation
+
+This package can be installed easily using `Composer <http://getcomposer.org>`.
+Simply add the following to the composer.json file at the root of your project:
+
+```javascript
+{
+    "require": {
+        "zimbra-api/common": "*"
+    }
+}
+```
+Then install your dependencies using ``composer.phar install``.