Fixed #14 - Added support for domains in ACLs.

gcloud/storage/acl.py

@@ -19,6 +19,8 @@
    corresponds to access for all users.
  - :func:`ACL.all_authenticated` corresponds
    to access for all users that are signed into a Google account.
+ - :func:`ACL.domain` corresponds to access on a
+   per Google Apps domain (ie, ``example.com``).
  - :func:`ACL.group` corresponds to access on a
    per group basis (either by ID or e-mail address).
  - :func:`ACL.user` corresponds to access on a
@@ -92,6 +94,7 @@ def __init__(self, type, identifier=None):
                          is optional.
       """
 
+      # TODO: Add validation of types.
       self.identifier = identifier
       self.roles = set([])
       self.type = type
@@ -309,6 +312,18 @@ def group(self, identifier):
 
     return self.entity('group', identifier=identifier)
 
+  def domain(self, domain):
+    """Factory method for a domain Entity.
+
+    :type domain: string
+    :param domain: The domain for this entity.
+
+    :rtype: :class:`ACL.Entity`
+    :returns: An entity corresponding to this domain.
+    """
+
+    return self.entity('domain', identifier=domain)
+
   def all(self):
     """Factory method for an Entity representing all users.