Remove zrangebyscore method handling
Change zrangebyscore to zrevrangebyscore in unit tests
Update README.md

Removed infromation about zrange
Merge remote-tracking branch 'origin/master' into extract-commands

Conflicts:
	src/main/java/com/sematext/solr/redis/RedisQParser.java
	src/main/java/com/sematext/solr/redis/RedisQParserPlugin.java
	src/test/java/com/sematext/solr/redis/TestRedisQParser.java