Update 'README.md'

pic link fix
2018-12-28 15:32:59 +00:00 · 2018-12-28 15:32:59 +00:00 · d724251c2d
--- a/README.md
+++ b/README.md
@ -1,3 +1,3 @@
 # Greegnhouse heating scetch for Arduino

-![greenhouseheating](https://gitlab.com/simplemicrocontrollers/greenhouseheating/raw/master/greenhouseheating_bb.png)
+![greenhouseheating](https://dev.ussr.win/microcontrollers/greenhouseheating/raw/branch/master/greenhouseheating_bb.png)