fix(readme): readme fix

README.en.md

@@ -3,7 +3,7 @@
 
 ## Introduction
 
-Satellite-track is a program for tracking satellite orbit, developed by cesium, vue and satelliteJS. It supports satellite and satellite constellation orbit display within the next 24 hours (performance considerations); Custom satellite orbit data (TLE) loading is also supported,TLE data is from celestrak;
+Satellite-track is a program for tracking satellite orbit, developed by cesium, vue and satelliteJS. It supports satellite and satellite constellation orbit display within the next 24 hours; TLE data is from celestrak;
 
 ## Preview
 #### [【GitHub Pages】](https://jiangteng2019.github.io/satellite-track/)
@@ -30,9 +30,7 @@ The compiled file cannot be opened using the browser's file protocol. You need a
 
 ## Tips
 1. The access speed of github pages is slow, and the TLE data and cesium data are large. Please wait patiently for the resources to load;
-1. If the spacecraft changes orbit frequently, the TLE cache needs to be cleared manually before use;
 1. In order to save performance, satellite-track limits the following options: 
-    - click display of satellite orbital data, not full display;
     - orbital data prediction for the next 24 hours;
     - only five constellation data can be selected at the same time;
 

README.md

@@ -3,7 +3,7 @@
 
 ## 介绍
 
-satellite-track 是一款追踪卫星轨道的程序，使用cesium、vue、satelliteJS开发。支持24小时之内(性能考虑)的卫星和卫星星座轨道显示；同时也支持自定义的卫星轨道数据（TLE）加载。数据来源于celestrak。
+satellite-track 是一款追踪卫星轨道的程序，使用cesium、vue、satelliteJS开发。支持24小时之内的卫星和卫星星座轨道显示； 数据来源于celestrak。
 
 ## 预览
 #### [【GitHub Pages】](https://jiangteng2019.github.io/satellite-track/)
@@ -30,9 +30,7 @@ npm run build
 
 ## 注意
 1. github pages 访问速度慢，TLE数据与cesium数据较大，请耐心等待资源加载;
-1. 如果航天器变轨频繁，使用前需手动清除TLE缓存;
 1. 为了节约性能，satellite-track 做了如下限制：
-    - 卫星轨道数据点击显示，而非全量显示;
     - 轨道数据预测未来24小时;
     - 只能同时选择5个星座数据;