Update README.md SASL/SSL disclaimer

Ryan P · web-flow · commit 184902fc5b32 · 2018-08-15T14:30:14.000-04:00
diff --git a/README.md b/README.md
@@ -195,7 +195,8 @@ Install
 **NOTE:** The pre-built Linux wheels do NOT contain SASL Kerberos/GSSAPI support.
           If you need SASL Kerberos/GSSAPI support you must install librdkafka and
           its dependencies using the repositories below and then build
-          confluent-kafka from source.
+          confluent-kafka  using the command in the "Install from
+          source from PyPi" section below.
 
 **Install self-contained binary wheels for OSX and Linux from PyPi:**
 
