Added Scratch Block (#1665)

* Update readme.md

* Update readme.md

* Create Scratch Blocks

Author: WesMeer

readme.md

@@ -829,6 +829,7 @@ Make sure to see [contributing.md](/contributing.md) for instructions on contrib
 * [Scratch 1](s/Scratch%201.sb)
 * [Scratch 2](s/Scratch%202.sb2)
 * [Scratch 3](s/Scratch%203.sb3)
+* [Scratch Blocks](s/Scratch%20Blocks)
 * [SCSS](s/SCSS.scss)
 * [Sed](s/Sed.sed)
 * [Seed](s/Seed)

s/Scratch Blocks

@@ -0,0 +1,2 @@
+when flag clicked
+say [hello world]