fix for pfx file support

lib/connection.js

@@ -100,7 +100,7 @@ Connection.prototype.initialize = function () {
 					this.deferredInitialize.reject(err);
 					return;
 				}
-				this.pfxData = data.toString();
+				this.pfxData = data;
 				this.checkInitialized();
 			}.bind(this));
 		}

lib/feedback.js

@@ -101,7 +101,7 @@ Feedback.prototype.initialize = function () {
 					this.deferredInitialize.reject(err);
 					return;
 				}
-				this.pfxData = data.toString();
+				this.pfxData = data;
 				this.checkInitialized();
 			}.bind(this));
 		}