Update Java imports for DeepJ 0.13 package layout

Use nn.transformer TextGenerator and Prism APIs. Model weights, architecture, metrics, and loading behavior are unchanged.

README.md

@@ -34,9 +34,17 @@ Use [DeepJ 0.13.0-alpha](https://github.com/KirstenAli/DeepJ):
 
 DeepJ 0.13.0-alpha expands the library’s network APIs. These model weights and their loading requirements are unchanged.
 
-Download this repository's `model.dj` and `tokenizer.bpe` into `downloaded-model`. Imports are omitted below.
+Download this repository's `model.dj` and `tokenizer.bpe` into `downloaded-model`.
 
 ```java
+import io.github.kirstenali.deepj.nn.transformer.TextGenerator;
+import io.github.kirstenali.deepj.nn.transformer.prism.DeepJPrism;
+import io.github.kirstenali.deepj.nn.transformer.prism.DeepJPrismConfig;
+import io.github.kirstenali.deepj.tokenizers.bpe.BPEModel;
+import io.github.kirstenali.deepj.tokenizers.bpe.BPEModelIO;
+import io.github.kirstenali.deepj.tokenizers.bpe.BPETokenizer;
+import java.nio.file.Path;
+
 Path directory = Path.of("downloaded-model");
 BPEModel bpe = BPEModelIO.load(directory.resolve("tokenizer.bpe"));
 BPETokenizer tokenizer = new BPETokenizer(bpe);