add reapIntervalMillis to defaults and format the file

lib/defaults.js

@@ -1,20 +1,31 @@
 module.exports = {
   //database user's name
   user: process.env.USER,
+
   //name of database to connect
   database: process.env.USER,
+
   //database user's password
   password: null,
+  
   //database port
   port: 5432,
+
   //number of rows to return at a time from a prepared statement's
   //portal. 0 will return all rows at once
   rows: 0,
+  
   //number of connections to use in connection pool
   //0 will disable connection pooling
   poolSize: 10,
-  //duration of node-pool timeout
+
+  //max milliseconds a client can go unused before it is removed
+  //from the pool and destroyed
   poolIdleTimeout: 30000,
+
+  //frequeny to check for idle clients within the client pool
+  reapIntervalMillis: 1000,
+
   // binary result mode
   binary: false
 }