Documentation update. And gitignore for ~ (tilde)

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README.md

+<img src="vipslogo_512.png" alt="VIPS Logo" height="250"/>
+
+# Nærstad model
+This is a model for Potato Late Blight _(Phytophthora infestans)_ developed by [Dr. Ragnhild Nærstad](https://www.syngenta.no/kontakt) when she was a researcher at NIBIO.
+
+Read more about the model here: https://www.vips-landbruk.no/forecasts/models/NAERSTADMO/
+
+It is designed to run inside the [VIPSCore system](https://gitlab.nibio.no/VIPS/VIPSCore)
+
+License: [NIBIO Open Source License](https://nibio.no/licenses)
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