README update

src/axolotl/integrations/diff_transformer/README.md

@@ -24,3 +24,17 @@ plugins:
 
 diff_attention: true
 ```
+
+Additional, optional arguments include:
+
+```yaml
+# How often to log diffential attention-related metrics to wandb
+diff_attn_log_every: 100
+
+# How many differential attention layers to monitor (strided from 0..k..num_layers)
+diff_attn_num_monitor_layers: 3
+
+# How many steps to "warmup" the mixing parameter for the negative component of differential attention
+# Follows a linear warmup schedule from 0 to 1; if not specified, the mixing component is set to 1
+diff_attn_warmup_steps: 1000
+```