Add MIME Types (#27)

* Add MIME type for zip files.

* Create separate case for text bucket, default to application and the extension.

main.js

@@ -214,9 +214,15 @@ async function main() {
 			case "html":
 				mime = "text/html";
 				break;
-			default:
+			case "zip":
+				mime = "application/zip";
+				break;
+			case "txt" || "csv" || "md":
 				mime = "text/*";
 				break;
+			default:
+				mime = "application/" + extension;
+				break;
 		}
 
 		// Return the file