Added Languages

Author: akkupy

c#/hello.cs

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+using System;
+
+namespace HelloWorld
+{
+  class Program
+  {
+    static void Main(string[] args)
+    {
+      Console.WriteLine("Hello World!");    
+    }
+  }
+}

dart/hello.dart

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+void main() {
+  print("Hello World");
+}

kotlin/hello.kt

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+// Kotlin Hello World Program
+fun main(args: Array<String>) {
+    println("Hello, World!")
+}

ruby/hello.rb

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+puts 'Hello, world!'

rust/hello.rs

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+// This is a comment, and is ignored by the compiler.
+// You can test this code by clicking the "Run" button over there ->
+// or if you prefer to use your keyboard, you can use the "Ctrl + Enter"
+// shortcut.
+
+// This code is editable, feel free to hack it!
+// You can always return to the original code by clicking the "Reset" button ->
+
+// This is the main function.
+fn main() {
+    // Statements here are executed when the compiled binary is called.
+
+    // Print text to the console.
+    println!("Hello World!");
+}