Create README_EN.md

READMEの英訳版になります。First tryなため今後微調整を予定。

Author: samuryu

Documentation~/README_EN.md

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+# NormalView
+
+![image](https://user-images.githubusercontent.com/29646672/139005190-0aed19d9-9b2c-40cd-b702-85a62b1d6101.png)
+
+## Summary
+
+It displays Normal, Tangent, and Binormal Lines of the Mesh on the Scene View.
+
+## Operating Environment
+
+Confirmed that it works on Unity's version 5.6 and later. 
+
+## How to use
+
+Add GameObjectにNormalView.cs to the GameObject.
+
+![image](https://user-images.githubusercontent.com/29646672/139005304-add62b61-d19a-49a7-82ec-bdd7ab0a2c1a.png)
+
+
+![959ac4fc7faa3140d9e028f929300f36](https://user-images.githubusercontent.com/29646672/139006857-0d2c0ba5-9b16-4db2-b852-626559a73b5a.gif)
+
+### scale
+
+Set the line's scale.
+
+### Is Render Normal
+
+When it's enabled, the normals are displayed in blue lines.
+
+### Is Render Tangent
+
+When it's enabled, the tangents are displayed in red lines.
+
+### IsRenderBiormal
+
+When it's enabled, the binormals are displayed in green lines.
+
+## Other
+
+Appreciate your comments and feedback.
+
+Tha'll be all❣
+
+