encode url parameters when searching contacts

Fixing an issue when searching for contacts that contain a plus sign in their email address (for example: [email protected] won't work, while [email protected] will).

Author: skratchdot

icontact/client.py

@@ -287,7 +287,7 @@ def search_contacts(self, params=None, account_id=None, client_folder_id=None, *
         for k in params:
             if len(p) > 0:
                 p += "&"
-            p += "%s=%s" % (k,params[k])
+            p += "%s=%s" % (k,urllib.quote(params[k]))
 
         result = self._do_request('a/%s/c/%s/contacts/?%s' % (account_id, client_folder_id, p), type='json')
         self.log.debug("search_contacts(%s)=%s" % (p, result))