expanding readme to include all sdk functions

Author: Naor Livne

README.md

@@ -3,6 +3,8 @@ An SDK for managing [nebula](https://nebula-orchestrator.github.io/) via python.
 
 translates all of Nebula [API](http://nebula.readthedocs.io/en/latest/api/) calls to something more pythonic.
 
+Source code is available at [github](https://github.com/nebula-orchestrator/nebula-python-sdk)
+
 # How To Use
 first get NebulaPythonSDK onto your machine
 ```bash
@@ -61,4 +63,34 @@ connection.list_device_group("device_group_name")
 # list device group info
 connection.list_device_group_info("device_group_name")
 
+# ping api
+connection.check_api()
+
+# delete app
+connection.delete_app("app_name")
+
+# stop app
+connection.stop_app("app_name")
+
+# start app
+connection.start_app("app_name")
+
+# restart app
+connection.restart_app("app_name")
+
+# update app
+connection.update_app("app_name", app_conf)
+
+# prune images on all device groups
+connection.prune_images()
+
+# delete device_group
+connection.delete_device_group("device_group_name")
+
+# prune images on a selected device groups
+connection.prune__device_group_images("device_group_name")
+
+# update device group
+connection.update_device_group("device_group_name", device_group_config)
+
 ```