Update README.md

README.md

@@ -3,6 +3,12 @@ Portal
 
 This is the old Portal source code ported to Source Engine 2013. I made this because I wanted to make proper Half-Life 2 with Portal gun, but I have no idea how to fix all of the bugs that occur in Portal on Half-Life 2 maps (like Metrocops not shooting bullets, various glitches with portals etc.). So I hope someone more experienced with Source engine will help me fix them.
 
+## Current Differences from original Portal
+* You can fizzle portals by reloading portal gun
+* Health regeneration is disabled without annoying red tint and there is fall damage now
+* Flashlight is enabled
+* NPCs can actually shoot you now
+
 ## Dependencies
 
 ### Windows