Add orx-gradient-descent

orx-gradient-descent/src/test/kotlin/TestMinimize.kt

@@ -0,0 +1,18 @@
+import org.spekframework.spek2.Spek
+import org.spekframework.spek2.style.specification.describe
+
+object TestMinimize : Spek({
+
+    describe("a simple 1d function") {
+        fun parabola(x: DoubleArray): Double {
+            return (x[0]+1) * (x[0]+1)
+        }
+
+        it("it can be minimized") {
+            val result = minimize(doubleArrayOf(10.0), f = ::parabola)
+            println(result.solution[0])
+        }
+
+    }
+
+})