Use gradle to build kotlin files

Use `gradle test` to run the unit tests.

Kotlin/src/test/kotlin/com/gildedrose/GildedRoseTest.kt

@@ -0,0 +1,19 @@
+package com.gildedrose
+
+import org.junit.Assert.*
+import org.junit.Test
+
+class GildedRoseTest {
+
+    @Test fun foo() {
+        val items = arrayOf<Item>(Item("foo", 0, 0))
+        val app = GildedRose(items)
+        app.updateQuality()
+        assertEquals("fixme", app.items[0].name)
+
+    }
+
+
+}
+
+

Kotlin/src/test/kotlin/com/gildedrose/TexttestFixture.kt

@@ -0,0 +1,36 @@
+package com.gildedrose
+
+fun main(args: Array<String>) {
+
+    println("OMGHAI!")
+
+    val items = arrayOf(Item("+5 Dexterity Vest", 10, 20), //
+            Item("Aged Brie", 2, 0), //
+            Item("Elixir of the Mongoose", 5, 7), //
+            Item("Sulfuras, Hand of Ragnaros", 0, 80), //
+            Item("Sulfuras, Hand of Ragnaros", -1, 80),
+            Item("Backstage passes to a TAFKAL80ETC concert", 15, 20),
+            Item("Backstage passes to a TAFKAL80ETC concert", 10, 49),
+            Item("Backstage passes to a TAFKAL80ETC concert", 5, 49),
+            // this conjured item does not work properly yet
+            Item("Conjured Mana Cake", 3, 6))
+
+    val app = GildedRose(items)
+
+    var days = 2
+    if (args.size > 0) {
+        days = Integer.parseInt(args[0]) + 1
+    }
+
+    for (i in 0..days - 1) {
+        println("-------- day $i --------")
+        println("name, sellIn, quality")
+        for (item in items) {
+            println(item)
+        }
+        println()
+        app.updateQuality()
+    }
+
+
+}