Add generated example (#8)

- Add generated example (8d8cf8a54a51d50edf5bf3d51e0b21cc9ed539b5)

README.md

@@ -25,6 +25,9 @@ widget:
 - text: two warriors fighting, in the middle, white background
   output:
     url: images/example_dfmvqtj6h.png
+- text: rome colosseum, in the middle, white background
+  output:
+    url: images/example_so38781dg.png
 
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