update readme links to 1.9.2

Author: GaryWilber

README.md

@@ -96,7 +96,7 @@ var Kafka = require('node-rdkafka');
 
 ## Configuration
 
-You can pass many configuration options to `librdkafka`.  A full list can be found in `librdkafka`'s [Configuration.md](https://github.com/edenhill/librdkafka/blob/v1.9.1/CONFIGURATION.md)
+You can pass many configuration options to `librdkafka`.  A full list can be found in `librdkafka`'s [Configuration.md](https://github.com/edenhill/librdkafka/blob/v1.9.2/CONFIGURATION.md)
 
 Configuration keys that have the suffix `_cb` are designated as callbacks. Some
 of these keys are informational and you can choose to opt-in (for example, `dr_cb`). Others are callbacks designed to
@@ -144,7 +144,7 @@ var producer = new Kafka.Producer({
 });
 ```
 
-A `Producer` requires only `metadata.broker.list` (the Kafka brokers) to be created.  The values in this list are separated by commas.  For other configuration options, see the [Configuration.md](https://github.com/edenhill/librdkafka/blob/v1.9.1/CONFIGURATION.md) file described previously.
+A `Producer` requires only `metadata.broker.list` (the Kafka brokers) to be created.  The values in this list are separated by commas.  For other configuration options, see the [Configuration.md](https://github.com/edenhill/librdkafka/blob/v1.9.2/CONFIGURATION.md) file described previously.
 
 The following example illustrates a list with several `librdkafka` options set.