Use WSS protocol when accessing LiveServer via HTTPS (#118)

Author: ffevotte

src/client.html

@@ -1,6 +1,6 @@
 <!-- browser-reload script, automatically added by the LiveServer.jl -->
 <script>
-var ws_liveserver_M3sp9 = new WebSocket("ws://" + location.host + location.pathname);
+var ws_liveserver_M3sp9 = new WebSocket((location.protocol=="https:" ? "wss:" : "ws:") + "//" + location.host + location.pathname);
 ws_liveserver_M3sp9.onmessage = function(msg) {
     if (msg.data === "update") {
         ws_liveserver_M3sp9.close();