Removed gevent from features, and added pyev

doc/fundamentals.rst

@@ -10,9 +10,9 @@ Features
 
  * **Bidirectional:** remote function can be call by both side of the
    connection, so a client can connect to a server and export functions to it.
- * **Use Gevent:** the server mode can use Gevent to take profits of
-   asynchronous io, but a threaded mode is also provided. The client mode can
-   be used without Gevent or Threading.
+ * **Fully event based**: sjRpc takes profits of asynchronous io, allowing a
+   server to handle thousands of client connection with a reasonable memory
+   usage.
  * **Multiplexed:** sjRpc can run many "protocols" on the same connection,
    read more about protocols in `Multiplexing & protocols`_ section.
  * **Fallback mode:** for compatibility with olders sjRpc.