Update README.md

subjects/revargs/README.md

@@ -1,5 +1,7 @@
 ### rev-arg
 
+### Instructions
+
 Write a program that takes the command line arguments and prints them in reverse order.
 - if the number of arguments is less than 1, print (`'\n'`)
 
@@ -14,4 +16,4 @@ $ go run . "Hello World!" "World!" "All" | cat -e
 All World! Hello World!$
 $ go run . 1 2 3 4 | cat -e
 4 3 2 1$
-```
+```