Readme gallery (#834)

* More readme tweaks.

* Update README.md

candle-examples/examples/bigcode/README.md

@@ -1,7 +1,19 @@
 # candle-starcoder: code generation model
 
-StarCoder/BigCode is a LLM model specialized to code generation.
+[StarCoder/BigCode](https://huggingface.co/bigcode/starcoderbase-1b) is a LLM
+model specialized to code generation. The initial model was trained on 80
+programming languages.
+
+## Running some example
 
 ```bash
 cargo run --example bigcode --release -- --prompt "fn fact(n: u64) -> u64 "
+
+> fn fact(n: u64) -> u64  {
+>     if n == 0 {
+>         1
+>     } else {
+>         n * fact(n - 1)
+>     }
+> }
 ```