Support Sorted Set with LEX commands

* new commands : ZLEXCOUNT, ZRANGEBYLEX, ZREMRANGEBYLEX
** added commands to Jedis, ShardedJedis, JedisCluster, PipelineBase with Binary
/ Normal(String)
** description links
*** http://redis.io/commands/zlexcount
*** http://redis.io/commands/zrangebylex
*** http://redis.io/commands/zremrangebylex
** Unit test included

Conflicts:
	src/main/java/redis/clients/jedis/BinaryShardedJedis.java
	src/main/java/redis/clients/jedis/Jedis.java
	src/main/java/redis/clients/jedis/JedisCluster.java
	src/main/java/redis/clients/jedis/Protocol.java
	src/main/java/redis/clients/jedis/ShardedJedis.java
	src/test/java/redis/clients/jedis/tests/commands/SortedSetCommandsTest.java
Remove unused (by accident?) import