xmemcached 2.3.0

• AWS ElasticCache Auto Discovery.
• Fixed NPE in rescheduleConnectRequest #53
• Fixed typo in setConnectionPoolSize #52

Maven:

<!-- https://mvnrepository.com/artifact/com.googlecode.xmemcached/xmemcached -->
<dependency>
    <groupId>com.googlecode.xmemcached</groupId>
    <artifactId>xmemcached</artifactId>
    <version>2.3.0</version>
</dependency>