Add Greeting.kt

src/main/kotlin/Greeting.kt

@@ -0,0 +1,3 @@
+fun greeting() {
+    println("Hello, alshabalin!")
+}

src/main/kotlin/Main.kt

@@ -1,7 +1,3 @@
-fun main(args: Array<String>) {
-    println("Hello World!")
-
-    // Try adding program arguments via Run/Debug configuration.
-    // Learn more about running applications: https://www.jetbrains.com/help/idea/running-applications.html.
-    println("Program arguments: ${args.joinToString()}")
+fun main() {
+    greeting()
 }