Added InsertionSort in Kotlin (Issue #43)

Kotlin/InsertionSort.kt

@@ -0,0 +1,21 @@
+fun insertionSort(array: Array<Int>) {
+    for (i in array.indices) {
+        val tmp = array[i]
+        var j = i
+        while(j > 0 && array[j-1] > tmp){
+            array[j] = array[j-1]
+            j -= 1
+        }
+        array[j] = tmp
+    }
+}
+
+fun main() {
+    var input = arrayOf(42,27,5,7,0,15,2,99,1)
+    print("Original list: ")
+    input.iterator().forEach { print("$it ") }
+    println()
+    print("Sorted list: ")
+    insertionSort(input)
+    input.iterator().forEach { print("$it ") }
+}