Added Event class and junit test

- event class contains the time of specific event, related team/boat and even location eg. leg.

#implement #story[5]

src/test/java/seng302/EventTest.java

@@ -0,0 +1,21 @@
+package seng302;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Test for Event class
+ * Created by Haoming on 7/03/17.
+ */
+public class EventTest {
+
+	@Test
+	public void getTimeString() throws Exception {
+		Leg leg = new Leg(035, 100, "Start");
+		Boat boat = new Boat("testBoat");
+		Event event = new Event(1231242, boat, leg);
+		assertEquals("20:31:242", event.getTimeString());
+	}
+}