[manual] Uniformize the subscriptions API method names.

This requires a zephyr_mirror deployment when it is pushed to prod.

(imported from commit 6543441fb264b518f8705d7989d068a1d50ce5d6)

api/examples/list-subscriptions

@@ -3,11 +3,11 @@ import sys
 import os
 import optparse
 
-usage = """get-subscriptions --user=<email address> [options]
+usage = """list-subscriptions --user=<email address> [options]
 
 Prints out a list of the user's subscriptions.
 
-Example: get-subscriptions --user=tabbott@humbughq.com --site=http://127.0.0.1:8000
+Example: list-subscriptions --user=tabbott@humbughq.com --site=http://127.0.0.1:8000
 """
 parser = optparse.OptionParser(usage=usage)
 parser.add_option('--site',
@@ -30,4 +30,4 @@ client = api.common.HumbugAPI(email=options.user,
                               verbose=True,
                               site=options.site)
 
-print client.get_subscriptions()
+print client.list_subscriptions()

api/examples/subscribe

@@ -38,4 +38,4 @@ if options.streams == "":
     print >>sys.stderr, "Usage:", parser.usage
     sys.exit(1)
 
-print client.subscribe(options.streams.split())
+print client.add_subscriptions(options.streams.split())