update readme

Author: lijin-THU

README.md

@@ -1,5 +1,5 @@
-[![Analytics](https://ga-beacon.appspot.com/UA-80121379-2/notes-python)](https://github.com/lijin-thu/notes-python)
 
+[![Analytics](https://ga-beacon.appspot.com/UA-80121379-2/notes-python)](https://github.com/lijin-thu/notes-python)
 
 # 中文 Python 笔记
 
@@ -215,3 +215,7 @@ conda update anaconda
 	 - [12.01 十分钟上手 Pandas](12-pandas/12.01-ten-minutes-to-pandas.ipynb)
 	 - [12.02 一维数据结构：Series](12-pandas/12.02-series-in-pandas.ipynb)
 	 - [12.03 二维数据结构：DataFrame](12-pandas/12.03-dataframe-in-pandas.ipynb)
+
+觉得有用打赏一下？
+
+<img src="payment.jpg", width=20%/>

index.ipynb

@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "[![Analytics](https://ga-beacon.appspot.com/UA-80121379-2/notes-python)](https://github.com/lijin-thu/notes-python)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -254,6 +261,15 @@
     "\t - [12.02 一维数据结构：Series](12-pandas/12.02-series-in-pandas.ipynb)\n",
     "\t - [12.03 二维数据结构：DataFrame](12-pandas/12.03-dataframe-in-pandas.ipynb)"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "觉得有用打赏一下？\n",
+    "\n",
+    "<img src=\"payment.jpg\", width=20%/>"
+   ]
   }
  ],
  "metadata": {