modify parallel epd run file

inkycal/display/drivers/parallel_drivers/README.md

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+# # IT8951 parallel drivers for Inkycal
+Inkycal now comes shipped with support for several parallel E-Paper displays!
+To allow Inkycal to use these displays, the following files were modified:
+  * main.c -> This is the main file and contains info about how the program runs
+  * example.c -> This file contains imported functions from the library. It was modified to display
+  the .BMP file from a custom path, which was not possible before
+  * example.h -> Any modification to functions in the example.c file need to be reflected here. If
+  a function in example.c now uses an addtional parameter, it must be adapted here accordingly
+
+
+## How it works
+Before anything becomes affective, it is required to navigate to this folder and run:
+````bash
+sudo make clean
+sudo make
+```
+This executes the MAKEFILE, which in turn compiles `main.c`, `example.c` and `example.h`.