Update README.md

Author: nmssilva

README.md

@@ -3,11 +3,12 @@
 [Discover today's sensation](http://nmssilva.github.io/sensation)
 
 ### To-do list:
-- Site prototype ☑️
-- Background image changes with the actual sensation ☑️
-- Loading Screen ☑️
+- Site prototype 
+- Background image changes with the actual sensation 
+- Loading Screen 
   - Find a nicer spinner icon
   - Fade the loading screen when it disappears
 - Segmented sentence maker
 - Dictionary definition of today's sensation
-- Sounds relative to todays sensation 🤔🤔🤔🤔
+- Sounds relative to todays sensation 
+- Web notifications