add gold method

src/main/java/plaindoll/Welcomer.java

@@ -7,4 +7,7 @@ public class Welcomer{
 	public String sayFarewell() {
 		return "Farewell, good hunter. May you find your worth in waking world.";
 	}
+	public String sayNeedGold(){
+		return "Not enough gold";
+	}
 }

src/test/java/plaindoll/WelcomerTest.java

@@ -22,4 +22,8 @@ public class WelcomerTest {
 		assertThat(welcomer.sayWelcome(), containsString("hunter"));
 		assertThat(welcomer.sayFarewell(), containsString("hunter"));
 	}
+	@Test
+	public void welcomerSaysSilver(){
+		assertThat(welcomer.sayNeedGold(), containsString("silver"));
+	}
 }