fixed issue #76 and merge #67
添加订阅号每日群发功能 文本、图文接口
添加订阅号每日群发功能 文本、图文接口 merge from issue #77
fix wechatauth qrcode auth. issue #75
add wechat payment API support in php sdk and js sdk.
This fixes #83 之前的有疏忽

之前有疏忽，之前微信是返回errmsg给token的，现在变成了redirect_url
修复了登陆时出错

登陆页面返回的json改变了
if ($result['ErrCode']!=0) return false; 改为 if ($result['base_resp']['err_msg']!='ok') return false;
preg_match("/token=(\d+)/i",$result['ErrMsg'],$matches); 改为 preg_match("/token=(\d+)/i",$result['redirect_url'],$matches);
Update Wechatext.class.php
Merge pull request #86 from ys21426/patch-1

修复了登陆时出错
Merge pull request #85 from leeeboo/patch-3

This fixes #83 之前的有疏忽
fix wechatext login bugs and edit README