#122 Expose zOGI get_anchor method via JSON-RPC

[Adam Tauno Williams]

The zOGI API object's new get_anchor method is exposed via the XML-RPC "/RPC2" protocol but not via the JSONRPC "/jsonrpc" protocol.

[Adam Tauno Williams]

It is pretty simple, the XML-RPC bundle exposes this using the following patch:

+    def getAnchor(self, anchor):
+        """
+        Return the specified sychronization anchor
+        """
+        return self.api.get_anchor( anchor )