Merge pull request #169 from stuttter/issue/168

Issue/168 - Remove master/slave

README.md

@@ -221,7 +221,7 @@ The second callback is called after a connection to a replica is established. It
 
 ## Sample replication lag detection configuration
 
-To detect replication lag, try [mk-heartbeat](http://www.maatkit.org/doc/mk-heartbeat.html) or pt-heartbeat from Percona Toolkit. These tools insert a timestamp into a table on the master and then check the lag on the replicas. The lag is the difference in seconds between the current time and the timestamp on the replica.
+To detect replication lag, try [mk-heartbeat](http://www.maatkit.org/doc/mk-heartbeat.html) or pt-heartbeat from Percona Toolkit. These tools insert a timestamp into a table on the primary and then check the lag on the replicas. The lag is the difference in seconds between the current time and the timestamp on the replica.
 
 This implementation requires the database user to have read access to the heartbeat table.
 

ludicrousdb/drop-ins/db-config.php

@@ -100,7 +100,7 @@
 );
 
 /**
- * This adds the same server again, only this time it is configured as a slave.
+ * This adds the same server again, only this time it is configured as a replica.
  * The last three parameters are set to the defaults but are shown for clarity.
  */
 $wpdb->add_database(