Script to serve the generated swagger JSON

We need custom CORS headers to serve the swagger JSON, so add a script to do it

scripts/swagger-http-server.py

@@ -0,0 +1,35 @@
+#!/usr/bin/env python
+#
+# Runs an HTTP server on localhost:8000 which will serve the generated swagger
+# JSON so that it can be viewed in an online swagger UI.
+#
+
+import argparse
+import os
+import SimpleHTTPServer
+import SocketServer
+
+PORT = 8000
+
+# Thanks to http://stackoverflow.com/a/13354482
+class MyHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
+    def end_headers(self):
+        self.send_my_headers()
+        SimpleHTTPServer.SimpleHTTPRequestHandler.end_headers(self)
+
+    def send_my_headers(self):
+        self.send_header("Access-Control-Allow-Origin", "*")
+
+
+if __name__ == '__main__':
+    scripts_dir = os.path.dirname(os.path.abspath(__file__))
+    parser = argparse.ArgumentParser()
+    parser.add_argument('swagger_dir', nargs='?',
+                        default=os.path.join(scripts_dir, 'swagger'))
+    args = parser.parse_args()
+
+    os.chdir(args.swagger_dir)
+
+    httpd = SocketServer.TCPServer(("localhost", PORT), MyHTTPRequestHandler)
+    print "Serving at http://localhost:%i/api-docs.json" % PORT
+    httpd.serve_forever()