Updated README

Author: shoya140

README.md

@@ -3,12 +3,21 @@ Zebra 2
 
 [![Image from Gyazo](https://i.gyazo.com/6153c4244b0ec971fa0d7460f417f17c.png)](https://gyazo.com/6153c4244b0ec971fa0d7460f417f17c)
 
-Zebra 2 is a Keynote theme optimized for research presentations. (TODO: add introduction)
+Zebra 2 is a Keynote template designed for research/technical presentations. It contains several master slides covering from the Zen style to bullet points. [read more](https://shoya.io/ja/posts/zebra-2/)
 
-## How to install
+## How to Install
 
 1. Clone or download this repository.
 2. Open `zebra2.kth`
 3. Select "Add to theme selector".
 
-Zebra 1: https://github.com/shoya140/zebra
+## Terms of Use
+
+* You can use Zebra 2 for either personal or commercial purposes without credit.
+* You can modify Zebra 2. Please indicate that it is based on Zebra 2 when you distribute it.
+* You are not allowed to sell Zebra 2 even a part of it.
+
+## Related Projects
+
+* [Zebra 1](https://github.com/shoya140/zebra): My first Keynote template.
+* [Azusa](https://sanographix.github.io/azusa-keynote/), [Azusa Colors](https://sanographix.github.io/azusa-colors/), [Azusa 3](https://azusa3.sanographix.net/): Zebra project was highly inspired by Azusa.