added readme

Author: GammaWolf

README.md

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+# Scroll with Pointer Movement CLI
+
+Scroll without a scroll wheel by moving a pointer (mouse, trackball, touchpad, trackpoint). Enables scrolling with devices without a scroll wheel (e.g. Logitech Marble Trackball). General ergnonomics utility. Command line tool.
+
+Activation:
+- hold keyboard key (combo)
+- toggle with keyboard key (combo) on/off
+
+# Dependencies
+- Linux
+- X11
+- libXi
+- libXtst
+- libXfixes
+
+## Install Dependencies
+
+### Debian-based system (Debian, Ubuntu):
+`sudo apt install libxi6 libxtst6 libxfixes3`
+
+### Fedora / Redhat:
+`sudo dnf install libXi libXtst libXfixes`