connection can be binary by default

if connection is created with config.binary = true, all queries get
executed with binary result unless explicit disabled with binary = false

lib/client.js

@@ -20,6 +20,7 @@ var Client = function(config) {
   this.connection = config.connection || new Connection({stream: config.stream});
   this.queryQueue = [];
   this.password = config.password || defaults.password;
+  this.binary = config.binary || defaults.binary;
   this.encoding = 'utf8';
   this.processID = null;
   this.secretKey = null;
@@ -173,6 +174,9 @@ p._pulseQueryQueue = function() {
 p.query = function(config, values, callback) {
   //can take in strings or config objects
   config = (typeof(config) == 'string') ? { text: config } : config;
+  if (this.binary && !('binary' in config)) {
+    config.binary = true;
+  }
 
   if(values) {
     if(typeof values === 'function') {

lib/defaults.js

@@ -14,5 +14,7 @@ module.exports = {
   //0 will disable connection pooling
   poolSize: 10,
   //duration of node-pool timeout
-  poolIdleTimeout: 30000
+  poolIdleTimeout: 30000,
+  // binary result mode
+  binary: false
 }