Update README.md

Author: gaoxiang12

README.md

@@ -1,6 +1,8 @@
 # NOTE
 [Slambook 2](https://github.com/gaoxiang12/slambook2) has be released since 2019.8 which has better support on Ubuntu 18.04 and has a lot of new features. Slambook 1 will still be available on github but I suggest new readers switch to the second version. 
 
+[Slambook-en](https://github.com/gaoxiang12/slambook-en) has also been completed recently. 
+
 # slambook
 This is the code written for my new book about visual SLAM called "14 lectures on visual SLAM" which was released in April 2017. It is highy recommended to download the code and run it in you own machine so that you can learn more efficiently and also modify it. The code is stored by chapters like "ch2" and "ch4". Note that chapter 9 is a project so I stored it in the "project" directory.
 
@@ -17,9 +19,6 @@ publisher = {Publishing House of Electronics Industry},
 year = {2017},
 author = {Xiang Gao and Tao Zhang and Yi Liu and Qinrui Yan},
 } ``
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-For English readers, we are currently translating this book into an online version, see [this page](https://gaoxiang12.github.io/slambook-en/) for details.
-
 # Contents
 - ch1 Preface
 - ch2 Overview of SLAM & linux, cmake