add readme

Author: altbdoor

README.md

@@ -0,0 +1,40 @@
+# helldivers-cursor
+
+[![poster](https://thumbs.gfycat.com/ImmaculateFalseHornet-poster.jpg)](https://gfycat.com/ImmaculateFalseHornet)
+
+<p align="center">
+    <em>
+        <a href="https://gfycat.com/ImmaculateFalseHornet">Gfycat of the cursor in action</a>
+    </em>
+</p>
+
+---
+
+An [AHK](https://www.autohotkey.com/) script that adds an overlay cursor for the game [Helldivers](https://store.steampowered.com/app/394510/).
+
+There is a "Crosshair Always Visible" setting, but all it adds is a blurry grey blob that is still very difficult to see.
+- https://steamcommunity.com/app/394510/discussions/0/1734343065615613678/
+- https://steamcommunity.com/app/394510/discussions/0/412446292765891245/
+
+With this AHK script, it will render the `crosshair.png` image file on your cursor when the Helldivers window is active, allowing you to aim better.
+
+### How To Use
+
+1. If you do not have AHK installed,
+    1. You can choose to trust me and download the compiled binaries in [Releases](https://github.com/altbdoor/helldivers-cursor/releases).
+    1. Or you can [install AHK](https://www.autohotkey.com/download/) today!
+1. If you have AHK installed,
+    1. Download the [code base as a ZIP file](https://github.com/altbdoor/helldivers-cursor/archive/master.zip).
+    1. Unzip the archive to where you want it to be.
+1. Edit the `crosshair.png` as you see fit.
+    1. Protip, the white color (`#fff`) will be rendered as transparent!
+    1. Please keep the image size as 64 pixels square.
+1. Double click on `helldivers_cursor.ahk` (or `helldivers_cursor.exe`, if you download the compiled binaries).
+1. Enjoy!
+
+
+### Additional Info
+
+- The cursor overlay updates itself every 10 milliseconds. It might appear laggy at times, but thats [the best AHK could do](https://autohotkey.com/docs/commands/SetTimer.htm#Remarks).
+- If something else is putting a heavy load on the CPU, the cursor might be even more laggy.
+- The cursor hides itself when you `Alt+Tab` to another window. It will only show itself on Helldivers window.