Merge pull request #1248 from MiczFlor/dev-2021-cal

Calendar for 2021 into the readme file

README.md

@@ -8,7 +8,13 @@
 
 A contactless jukebox for the Raspberry Pi, playing audio files, playlists, podcasts, web streams and spotify triggered by RFID cards. All plug and play via USB, no soldering iron needed. Update: if you must, it now also features a howto for adding GPIO buttons controls.
 
-![The 2020 Phoniebox Calendar](docs/2020-Phoniebox-Calendar.jpg "The 2020 Phoniebox Calendar")
+## The Phoniebox Calendar 2021 is here!!!
+
+Another bunch of wonderful designs! 2021 is the third Phoniebox calendar. If you are interested, you can see the [2019 and 2020 calendars in the docs folder](https://github.com/MiczFlor/RPi-Jukebox-RFID/tree/develop/docs). Download [the printable PDF of 2021 here](https://mi.cz/static/2021-Phoniebox-Calendar.pdf). 
+
+![The 2021 Phoniebox Calendar](docs/2021-Phoniebox-Calendar.jpg "The 2021 Phoniebox Calendar")
+
+The year 2020 also has a clear *:star: community hero :star:*: @s-martin has been doing outstanding work for the Phoniebox community:sparkles:. Thanks to you and may 2021 be a wonderful year for you.
 
 ## Important updates / news