add readme

README.md

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+## What is this?
+This tool was developed to enable easy analysis of USB-Dataloggers that record humidity and/or temperature, supporting a variety of formats with a comfortable, minimalistic and easy to use, interface.
+
+## Dependencies (pip3)
+
+    tkinter
+    language
+    matplotlib
+    codecs
+    dbfread
+
+## Supported Formats
+
+- .xbf (XAML Binary Format)
+- .xls (Microsoft Excel)
+- .csv (Comma Separated Values) (UTF-8/ASCII/Latin-1)
+- Format not supported? Send me a sample file!
+
+## Output
+![Plot](https://media.atlantishq.de/ths-plot-example.png)
+