Add butler support (for itch.io)

Author: Ealrann

build.gradle

@@ -11,6 +11,7 @@ buildscript {
 	}
 	dependencies {
 		classpath "org.javamodularity:moduleplugin:1.5.0"
+        classpath "org.mini2Dx:butler:1.1.3"
 	}
 }
 

org.sheepy.vsand/build.gradle

@@ -3,6 +3,7 @@ import org.gradle.internal.os.OperatingSystem
 plugins {
 	id 'application'
 	id 'distribution'
+	id 'org.mini2Dx.butler'
 	id 'org.beryx.jlink' version '2.10.4'
 }
 
@@ -16,6 +17,23 @@ jlink {
     }
 }
 
+
+butler {
+  user = "ealrann"
+  game = "vsand"
+  userVersion = project.version
+
+  windows {
+	binDirectory = "$projectDir/build/image"
+    channel = "windows"
+  }
+  linux {
+	binDirectory = "$projectDir/build/image"
+    channel = "linux"
+  }
+}
+
+
 mainClassName = 'org.sheepy.vsand/org.sheepy.vsand.VSandApplicationLauncher'
 jar {
     manifest {