Use llama v3 by default + add to readme. (#2094)

README.md

@@ -60,7 +60,7 @@ These online demos run entirely in your browser:
 
 We also provide a some command line based examples using state of the art models:
 
-- [LLaMA and LLaMA-v2](./candle-examples/examples/llama/): general LLM, includes
+- [LLaMA v1, v2, and v3](./candle-examples/examples/llama/): general LLM, includes
   the SOLAR-10.7B variant.
 - [Falcon](./candle-examples/examples/falcon/): general LLM.
 - [Gemma](./candle-examples/examples/gemma/): 2b and 7b general LLMs from Google Deepmind.
@@ -200,7 +200,7 @@ If you have an addition to this list, please submit a pull request.
     - WASM support, run your models in a browser.
 - Included models.
     - Language Models.
-        - LLaMA v1 and v2 with variants such as SOLAR-10.7B.
+        - LLaMA v1, v2, and v3 with variants such as SOLAR-10.7B.
         - Falcon.
         - StarCoder, StarCoder2.
         - Phi 1, 1.5, and 2.

candle-examples/examples/llama/main.rs

@@ -85,7 +85,7 @@ struct Args {
     revision: Option<String>,
 
     /// The model size to use.
-    #[arg(long, default_value = "v2")]
+    #[arg(long, default_value = "v3")]
     which: Which,
 
     #[arg(long)]