Add some text to the Introduction.

nnethercote · LegNeato · commit 5281459c65ec · 2025-09-15T18:12:46.000-07:00
It's currently blank, which is odd and uninviting.
diff --git a/guide/src/README.md b/guide/src/README.md
@@ -0,0 +1,3 @@
+# Introduction
+
+Welcome to the rust-cuda guide! Let's dive right in.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+# Introduction`
	`2`	`+`
	`3`	`+Welcome to the rust-cuda guide! Let's dive right in.`