upgrade deno version

README.md

@@ -3,17 +3,17 @@
 [![Build Status](https://www.travis-ci.org/manyuanrong/deno-smtp.svg?branch=master)](https://www.travis-ci.org/manyuanrong/deno-smtp)
 ![GitHub](https://img.shields.io/github/license/manyuanrong/deno-smtp.svg)
 ![GitHub release](https://img.shields.io/github/release/manyuanrong/deno-smtp.svg)
-![(Deno)](https://img.shields.io/badge/deno-0.10.0-green.svg)
+![(Deno)](https://img.shields.io/badge/deno-0.12.0-green.svg)
 
 ### Example
 
 ```ts
-import { SmtpClient } from "https://deno.land/x/smtp@v0.2.0/mod.ts";
+import { SmtpClient } from "https://deno.land/x/smtp@v0.3.0/mod.ts";
 
 const client = new SmtpClient();
 await client.connect({
   host: "smtp.163.com",
-  port: 25,
+  port: 25,Ø
   username: "username",
   password: "password"
 });

deps.ts

@@ -1,5 +1,5 @@
+export { BufReader, BufWriter } from "https://deno.land/std/io/bufio.ts";
 export {
   format,
   setColorEnabled
 } from "https://deno.land/x/bytes_formater/mod.ts";
-export { BufReader, BufWriter, EOF } from "https://deno.land/std/io/bufio.ts";

smtp.ts

@@ -1,6 +1,6 @@
 import { CommandCode } from "./code.ts";
 import { ConnectConfig, SendConfig } from "./config.ts";
-import { BufReader, EOF, BufWriter } from "./deps.ts";
+import { BufReader, BufWriter } from "./deps.ts";
 
 const decoder = new TextDecoder();
 const encoder = new TextEncoder();
@@ -71,7 +71,7 @@ export class SmtpClient {
 
   private async readCmd(): Promise<Command> {
     const result = await this._reader.readLine();
-    if (result === EOF) return null;
+    if (result === Deno.EOF) return null;
     const line = decoder.decode(result.line);
     const cmdCode = line.slice(0, 3).trim();
     const cmdArgs = line.slice(3).trim();