Update README

README.md

@@ -1,6 +1,9 @@
 sarama
 ======
 
-Sarama is a Go library for Apache Kafka 0.8.
+Sarama is an MIT-licensed Go client library for Apache Kafka 0.8 (and later).
 
+Documentation is available via godoc.
+
+https://kafka.apache.org/
 https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol