Update README.md

Added usage section

README.md

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 # A Basic Compiler For Pseudocode
 
-My implementation of a fully functional compiler to make the IGCSE / A Level Computer Science language Pseuedocode executable on any machine. The compiler consists of a hand-built lexer, parser and code generator (glossing over details for brevity). Code generation creates valid Python code for users to study and find relationships between pseudocode and Python. 
+My implementation of a fully functional compiler to make the IGCSE / A Level Computer Science language Pseuedocode executable on any machine. The compiler consists of a hand-built lexer, parser and code generator. Code generation creates valid Python code for users to study and find relationships between pseudocode and Python. 
 
-Should this project succeed, I hope it can help people who really struggled to learn the pseudocode syntax like I did. 
+I hope it can help people who really struggled to learn the pseudocode syntax like I did. 
+
+## Usage 
+1. Download binary for either Linux or Windows
+2. Run using command ./ppc \[your_file.pcode]
+3. Output file will be your_file.py
+4. (Optional) Add downloaded binary to your path if you want to run ppc from anywhere
+
+Example pseudocode files can be found in the data folder. Have fun and try writing your own!