Updated README

Author: fxf8

README.md

@@ -6,7 +6,20 @@ Creates a file for each of the given filenames and enables its executable permis
 
 ## Installation
 
-First, build `main.py` with
+### Prerequisites
+Python `pyinstaller` must be installed but not added to path
+`pyinstaller` is available with 
+```bash
+pip install pyinstaller
+```
+
+First clone and enter the repository
+```bash
+git clone https://github.com/Quick-scripts/Touch-executable.git
+cd Touch-executable
+```
+
+Second, build `main.py` with
 
 ```bash
 source build.sh