added adapter sample

adapter/src/main/java/com/iluwatar/GoblinGlider.java

@@ -0,0 +1,17 @@
+package com.iluwatar;
+
+public class GoblinGlider {
+
+	public void attachGlider() {
+		System.out.println("glider attached");
+	}
+	
+	public void gainSpeed() {
+		System.out.println("gaining speed");
+	}
+	
+	public void takeOff() {
+		System.out.println("lift-off!");
+	}
+	
+}