Update readme

README.md

@@ -1,15 +1,18 @@
-# packmd
+# buildmd
 
-To install dependencies:
-
-```bash
-bun install
 ```
+buildmd - Build markdown files to html with templates and metadata
 
-To run:
+Usage:
+  buildmd file.md
+  buildmd file.md -o output.html
+  echo "some markdown" | buildmd
+
+Options:
+  --outfile, -o <file>    Output file path
+  --template, -t <file>   Template file path
+  --stylesheet, -s <file> Stylesheet file path
+  --stdout                Force output to stdout
+  --help, -h              Show this help message
 
-```bash
-bun run index.ts
 ```
-
-This project was created using `bun init` in bun v1.2.12. [Bun](https://bun.sh) is a fast all-in-one JavaScript runtime.