Started the kotlin track

kotlin/rna-transcription/src/main/kotlin/RnaTranscription.kt

@@ -0,0 +1 @@
+fun transcribeToRna(dna: String): String = ""

kotlin/rna-transcription/src/test/kotlin/RnaTranscriptionTest.kt

@@ -0,0 +1,45 @@
+import org.junit.Test
+import org.junit.Ignore
+import kotlin.test.assertEquals
+
+class RnaTranscriptionTest {
+
+    /*
+      In Kotlin functions can be declared at top level in a file, meaning
+      you do not need to create a class to hold a function, like languages
+      such as Java, C# or Scala.
+
+      http://kotlinlang.org/docs/reference/functions.html#function-scope
+
+     */
+
+    @Test
+    fun cytosineComplementIsGuanine() {
+        assertEquals("G", transcribeToRna("C"))
+    }
+
+    @Ignore
+    @Test
+    fun guanineComplementIsCytosine() {
+        assertEquals("C", transcribeToRna("G"))
+    }
+
+    @Ignore
+    @Test
+    fun thymineComplementIsAdenine() {
+        assertEquals("A", transcribeToRna("T"))
+    }
+
+    @Ignore
+    @Test
+    fun adenineComplementIsUracil() {
+        assertEquals("U", transcribeToRna("A"))
+    }
+
+    @Ignore
+    @Test
+    fun rnaTranscription() {
+        assertEquals("UGCACCAGAAUU", transcribeToRna("ACGTGGTCTTAA"))
+    }
+
+}