init project with sprite and bare l5 for mockup

l5-mockup/main.lua

@@ -0,0 +1,19 @@
+require("L5")
+
+function setup()
+  size(400, 400)
+
+  -- Set the program title
+  windowTitle("Basic sketch")
+
+  -- Sets print command output to display in window
+  printToScreen()
+
+  describe('Draws a yellow background')
+end
+
+function draw()
+  -- Fills the background with the color yellow
+  background(255, 215, 0)
+end
+