Update .env

remove whitespaces and add new optional login area

examples/mirotalk/.env

@@ -7,9 +7,13 @@
 HTTPS=false
 
 # Domain 
-  
 HOST=localhost
 
+# enable the following to protect mirotalk with an additional login screen
+HOST_PROTECTED=false
+HOST_USERNAME=username
+HOST_PASSWORD=password
+
 # Signaling Server listen port 
 
 PORT=3000