Update README.md

Author: Sarunas Kalade

README.md

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-# sdr_course
+<img src="notebooks/strathclyde_banner.png" width="100%">
+
+# DSP Notebooks
+
+This repository contains a collection of educational Jupyter Notebooks on DSP (Digital Signal Processing) theory. No special hardware required, just a computer that has Python and the Jupyter environment installed (we recommend [Anaconda](https://docs.anaconda.com/anaconda/install/) if you are setting up for the first time). If you are running this from a board running [PYNQ](https://github.com/Xilinx/PYNQ) you should already be all set.