add contact info

Author: Leeous

README.md

@@ -8,4 +8,7 @@ Creates GMAs, addon.json, and uploads it to the Workshop.
 ![](https://i.imgur.com/PjWwPJP.png)
 
 ## Instructions
-Download a [release](https://github.com/Leeous/gmod-addon-tool/releases) and run `gmod-addon-tool.exe`.
+Download a [release](https://github.com/Leeous/gmod-addon-tool/releases) and run `gmod-addon-tool.exe`.
+
+### Have an issue?
+[Create an issue](https://github.com/Leeous/gmod-addon-tool/issues/new) or send me a tweet/DM [@LeeTheCoder](https://twitter.com/LeeTheCoder).