Use versioned links (#Closes #114)

Prevents issues where users copy-paste the import code, and then a future update breaks it.

Also ensures that the default wasm files match the target version

docs/snippets/2_installation.snippet

@@ -7,6 +7,6 @@ npm i @xenova/transformers
 Alternatively, you can use it in vanilla JS, without any bundler, by using a CDN or static hosting. For example, using [ES Modules](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules), you can import the library with:
 ```html
 <script type="module">
-    import { pipeline } from 'https://cdn.jsdelivr.net/npm/@xenova/transformers';
+    import { pipeline } from 'https://cdn.jsdelivr.net/npm/@xenova/transformers@2.0.2';
 </script>
 ```

docs/snippets/4_custom-usage.snippet

@@ -1,6 +1,6 @@
 
 
-By default, Transformers.js uses [hosted pretrained models](https://huggingface.co/models) and [precompiled WASM binaries](https://cdn.jsdelivr.net/npm/@xenova/transformers/dist/), which should work out-of-the-box. You can customize this as follows:
+By default, Transformers.js uses [hosted pretrained models](https://huggingface.co/models) and [precompiled WASM binaries](https://cdn.jsdelivr.net/npm/@xenova/transformers@2.0.2/dist/), which should work out-of-the-box. You can customize this as follows:
 
 
 ### Settings

src/env.js

@@ -58,7 +58,7 @@ const localModelPath = RUNNING_LOCALLY
 // In practice, users should probably self-host the necessary .wasm files.
 onnx_env.wasm.wasmPaths = RUNNING_LOCALLY
     ? path.join(__dirname, '/dist/')
-    : 'https://cdn.jsdelivr.net/npm/@xenova/transformers/dist/';
+    : 'https://cdn.jsdelivr.net/npm/@xenova/transformers@2.0.2/dist/';
 
 
 /**