examples/go: http handler & http server

examples/go/README.txt

-Sample Go echo application.
+Sample Go applications.
 
-Instructions to run on android emulator:
+echo_client, echo_server - sample applications that talk to each other
+
+http_handler - application that implements HTTP server; uses the mojo HTTP
+Server service to handle the HTTP protocol details, and just contains the logic
+for handling its registered urls.
+
+http_server - application that implements HTTP server; uses go net stack on top
+of the mojo network service.
 
 1) Follow steps from //mojo/go/sample_app/README.txt
 
-To run client:
+To run echo client:
 $ mojo/tools/android_mojo_shell.py --enable-multiprocess mojo:go_echo_client
+
+To run http handler:
+$ mojo/tools/android_mojo_shell.py --enable-multiprocess mojo:go_http_handler
+
+To run http server:
+$ mojo/tools/android_mojo_shell.py --enable-multiprocess mojo:go_http_server