API: Add unsubscribe function.

(imported from commit 6dc55e9030770500770ce3921a4e77499d64f2d6)

examples/unsubscribe

@@ -0,0 +1,41 @@
+#!/usr/bin/python
+import sys
+import os
+import optparse
+
+usage = """unsubscribe --user=<email address> [options] --streams=<streams>
+
+Ensures the user is not subscribed to the listed streams.
+
+Example: unsubscribe --user=tabbott@humbughq.com --site=http://127.0.0.1:8000
+"""
+parser = optparse.OptionParser(usage=usage)
+parser.add_option('--site',
+                  dest='site',
+                  default="https://humbughq.com",
+                  action='store')
+parser.add_option('--api-key',
+                  dest='api_key',
+                  default="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
+                  action='store')
+parser.add_option('--streams',
+                  dest='streams',
+                  default="",
+                  action='store')
+parser.add_option('--user',
+                  dest='user',
+                  action='store')
+(options, args) = parser.parse_args()
+
+sys.path.append(os.path.dirname(os.path.dirname(os.path.dirname(__file__))))
+import api.common
+client = api.common.HumbugAPI(email=options.user,
+                              api_key=options.api_key,
+                              verbose=True,
+                              site=options.site)
+
+if options.streams == "":
+    print >>sys.stderr, "Usage:", parser.usage
+    sys.exit(1)
+
+print client.remove_subscriptions(options.streams.split())