feat: include source and database in monitor events (#308)

* Include missing data in monitor events

* Revert generated docs, update comments

Author: 9point6

README.md

@@ -445,7 +445,7 @@ Here is a simple example:
 
 ```javascript
 redis.monitor(function (err, monitor) {
-  monitor.on('monitor', function (time, args) {
+  monitor.on('monitor', function (time, args, source, database) {
   });
 });
 ```

lib/redis.js

@@ -462,14 +462,14 @@ Redis.prototype.silentEmit = function (eventName) {
  * var redis = new Redis();
  * redis.monitor(function (err, monitor) {
  *   // Entering monitoring mode.
- *   monitor.on('monitor', function (time, args) {
+ *   monitor.on('monitor', function (time, args, source, database) {
  *     console.log(time + ": " + util.inspect(args));
  *   });
  * });
  *
  * // supports promise as well as other commands
  * redis.monitor().then(function (monitor) {
- *   monitor.on('monitor', function (time, args) {
+ *   monitor.on('monitor', function (time, args, source, database) {
  *     console.log(time + ": " + util.inspect(args));
  *   });
  * });

lib/redis/parser.js

@@ -97,7 +97,8 @@ exports.returnReply = function (reply) {
       var args = replyStr.slice(argindex + 1, -1).split('" "').map(function (elem) {
         return elem.replace(/\\"/g, '"');
       });
-      this.emit('monitor', timestamp, args);
+      var dbAndSource = replyStr.slice(len + 2, argindex - 2).split(' ');
+      this.emit('monitor', timestamp, args, dbAndSource[1], dbAndSource[0]);
       return;
     }
   }