Add 1.7 to travis and reduce number of connections in `TestLen`.

.travis.yml

@@ -4,6 +4,7 @@ go:
 - 1.4
 - 1.5
 - 1.6
+- 1.7
 install:
   - go get github.com/gorilla/websocket
 script:

melody_test.go

@@ -83,7 +83,7 @@ func TestEcho(t *testing.T) {
 func TestLen(t *testing.T) {
 	rand.Seed(time.Now().UnixNano())
 
-	connect := int(rand.Int31n(1000))
+	connect := int(rand.Int31n(100))
 	disconnect := rand.Float32()
 	conns := make([]*websocket.Conn, connect)
 	defer func() {