added with statement example

examples/example_with_usage.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+"""Cloudflare API code - example"""
+
+import os
+import sys
+
+sys.path.insert(0, os.path.abspath('..'))
+import CloudFlare
+
+def main():
+    """Cloudflare API code - example"""
+
+    # Grab the first argument, if there is one
+    try:
+        zone_name = sys.argv[1]
+        params = {'name':zone_name, 'per_page':1}
+    except IndexError:
+        params = {'per_page':50}
+
+    #
+    # Show how 'with' statement works
+    #
+    with CloudFlare.CloudFlare() as cf:
+        zones = cf.zones(params=params)
+        for zone in sorted(zones, key=lambda v: v['name']):
+            print zone['id'], zone['name']
+
+    exit(0)
+
+if __name__ == '__main__':
+    main()
+