Update README.md

README.md

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 # electerm-theme-termius
-theme for electerm in termius style
+theme for [electerm](https://github.com/electerm/electerm) in [Termius](https://termius.com/) style
+
+## About
+I tried to recreate the look and feel of [Termius](https://termius.com/).
+
+## Screenshot
+![electerm-theme-termius](https://user-images.githubusercontent.com/52013820/169148953-306cb06b-89f7-4a2b-8c77-4269441daa3b.png)
+
+## How to install
+Download the files from the release. Import the `.ini`-File as new theme. Change the background to the `.png`-File.
+
+I use these background parameters:
+| Opacity | Blur | Brightness | Grayscale | Contrast |
+| :---: | :---: | :---: | :---: | :---: |
+| 0.25 | 1 | 1 | 0 | 1 |
+
+Additionally, you can install the original font: [`Source Code Pro SemiBold`](https://fonts.google.com/share?selection.family=Source%20Code%20Pro:wght@600)