Include the id param to the people list method.

No other param can be used with this one. The Spark error message is pretty clear:

> GET by ID cannot also other query filters, or a 'max' parameter

Author: jbogarin

ciscosparkapi/api/people.py

@@ -137,7 +137,7 @@ def __init__(self, session):
         self._session = session
 
     @generator_container
-    def list(self, email=None, displayName=None, orgId=None, max=None):
+    def list(self, email=None, displayName=None, orgId=None, id=None, max=None):
         """List people
 
         This method supports Cisco Spark's implementation of RFC5988 Web
@@ -154,6 +154,7 @@ def list(self, email=None, displayName=None, orgId=None, max=None):
             email(basestring): The e-mail address of the person to be found.
             displayName(basestring): The complete or beginning portion of
                 the displayName to be searched.
+            id(basestring): List people by ID. Accepts up to 85 person IDs separated by commas.
             orgId(basestring): The organization id.
             max(int): Limits the maximum number of people returned from the
                 Spark service per request.
@@ -171,16 +172,20 @@ def list(self, email=None, displayName=None, orgId=None, max=None):
         assert email is None or isinstance(email, basestring)
         assert displayName is None or isinstance(displayName, basestring)
         assert orgId is None or isinstance(orgId, basestring)
+        assert id is None or isinstance(id, basestring)
         assert max is None or isinstance(max, int)
         params = {}
-        if email:
-            params['email'] = email
-        elif displayName:
-            params['displayName'] = displayName
-        if orgId:
-            params["orgId"] = orgId
-        if max:
-            params['max'] = max
+        if id:
+            params["id"] = id
+        else:
+            if email:
+                params['email'] = email
+            elif displayName:
+                params['displayName'] = displayName
+            if orgId:
+                params["orgId"] = orgId
+            if max:
+                params['max'] = max
         # API request - get items
         items = self._session.get_items('people', params=params)
         # Yield Person objects created from the returned items JSON objects