Update README.md fixes CodingTrain#4440

Added the original poem from the video to recycle the poem as the Earth day is super important and we should all recycle.

README.md

@@ -4,6 +4,23 @@ You'll definitely love it!!
 
 and also you will learn while loving it !!(;
 
+~Original poem from the youtube video (ttps://www.youtube.com/watch?v=WMykv2ZMyEQ)~
+The Rainbow and the Unicorn and the Pony
+Purple rain
+is not pink
+is not orange either
+Blue
+Green
+Indigo
+Recycle!
+Unicorn
+Yellow
+Red is hot
+These are the colors of the rainbow.
+And the unicorn.
+Pony
+*Today is (not) Earth Day
+
 I love it so much I am editing a copy as a Pull Request<strong> </p>
 
 यह मेरे भययोग्य इंद्रधनुष कविता के लिए एक रेपो है! आप निश्चित रूप से यह प्यार करने के लिए जा रहे हैं!
@@ -50,4 +67,5 @@ MODIFYING FILES!
 Your are awesome bro.
 
 getting into forking, cloning & pulling
-added empty
+added empty
+