Update build.gradle

Author: Ashuh

build.gradle

@@ -12,8 +12,10 @@ version '1.0-SNAPSHOT'
 sourceCompatibility = '11'
 targetCompatibility = '11'
 
-application.mainModule = 'jtorrent'
-mainClassName = "jtorrent.Main"
+application {
+    mainModule = 'jtorrent'
+    mainClass = 'jtorrent.application.presentation.Main'
+}
 
 repositories {
     mavenCentral()