add GameOfThrones#quote (#191)

src/main/java/com/github/javafaker/GameOfThrones.java

@@ -23,4 +23,8 @@ public class GameOfThrones {
     public String dragon() {
         return faker.resolve("game_of_thrones.dragons");
     }
+
+    public String quote() {
+      return faker.resolve("game_of_thrones.quotes");
+    }
 }

src/test/java/com/github/javafaker/GameOfThronesTest.java

@@ -1,6 +1,8 @@
 package com.github.javafaker;
 
 import static com.github.javafaker.matchers.MatchesRegularExpression.matchesRegularExpression;
+import static org.hamcrest.Matchers.isEmptyOrNullString;
+import static org.hamcrest.core.IsNot.not;
 import static org.junit.Assert.assertThat;
 
 import org.junit.Test;
@@ -26,4 +28,9 @@ public class GameOfThronesTest extends AbstractFakerTest {
     public void dragon() {
         assertThat(faker.gameOfThrones().dragon(), matchesRegularExpression("\\w+"));
     }
+
+    @Test
+    public void quote() {
+        assertThat(faker.gameOfThrones().quote(), not(isEmptyOrNullString()));
+    }
 }