Update README.md

Made a proper readme

Author: AKrylatych

README.md

@@ -1,9 +1,21 @@
 # Laptop-powersave-scripts
-This is a collection of scripts made to improve battery life on laptops.
+This is a script made to improve battery life on linux laptops.
+It allows to switch between cpu power usage modes in the bash terminal.
 
-Required packages:
+# Usage:
+    Execute the script with superuser privileges (it's required to unlock more power governors and for switching between cpu usage modes)
+    Type the name of the mode you wish to choose and hit enter.
+    In the options menu you can switch to an extended mode that shows even more cpu power usage modes.
+    Basic modes include:    
+    Performance mode - Sets the CPU clock speeds to max, regardless of the load
+    Power saving mode - Sets the CPU clock speeds to minimum, regardless of the load
+    Gradual scaling (ondemand) - Sets the CPU clock speeds depending on the load.
+    
+    You can also input your desired mode as a parameter when executing the script to bypass the GUI entirely.  
+
+# Required packages:
     Cpufreq-utils
-![Screenshot](https://github.com/Hellerlight/Laptop-powersave-scripts/head/scr1.png)
-![Screenshot](https://github.com/Hellerlight/Laptop-powersave-scripts/head/scr2.png)
-![Screenshot](https://github.com/Hellerlight/Laptop-powersave-scripts/head/scr3.png)
+    
+![Screenshot](head/scr1.png)
+![Screenshot](head/scr2.png)
 ![Screenshot](head/scr3.png)