Merge pull request #1262 from ymhr/master

Add missing `connection` property from the `PoolConnection` type

Author: sidorares

promise.d.ts

@@ -81,6 +81,7 @@ export interface Connection extends EventEmitter {
 }
 
 export interface PoolConnection extends Connection {
+  connection: Connection;
   release(): void;
 }
 

typings/mysql/lib/PoolConnection.d.ts

@@ -2,6 +2,7 @@
 import Connection = require('./Connection');
 
 declare class PoolConnection extends Connection {
+    connection: Connection;
     release(): void;
 }