update readme

Readme.md

@@ -58,19 +58,19 @@ python text-to-mic.py "Text you'd like to speak" 8 5
 To get this script working you will need to install the following on the relevant operating system
 
 ### Windows
-pip install tk
-pip install pyaudio
-pip install python-dotenv
-pip install wave
-pip install pydub
+* pip install tk
+* pip install pyaudio
+* pip install python-dotenv
+* pip install wave
+* pip install pydub
 
 
 ### Mac
 
-brew install portaudio
-pip install python-dotenv
-pip install wave
-pip install pydub
+* brew install portaudio
+* pip install python-dotenv
+* pip install wave
+* pip install pydub
 
 # Making an installer