doc

Author: b1f6c1c4

README.md

@@ -1,11 +1,13 @@
 # draw.io-export
 
-Convert draw.io xml to pdf/png within command line.
+Convert [draw.io](https://app.diagrams.net/) xml file (usually `*.drawio`) to `pdf`/`png` within command line.
+
+Works nicely with `make` and/or `latexmk`. Useful if you are writing a paper or thesis with many figures.
 
 ## Usage
 
 ```bash
 npm install --global draw.io-export
-drawio <source.xml> -o <dest.pdf>
-drawio <source.xml> -o <dest.png>
+drawio <source.drawio> -o <dest.pdf>
+drawio <source.drawio> -o <dest.png>
 ```

index.js

@@ -13,7 +13,7 @@ process.on('uncaughtException', (e) => {
 });
 
 const { argv } = yargs
-  .usage('$0 [mxfile] -o [target]')
+  .usage('$0 <source.drawio> -o [target]')
   .option('o', {
     alias: 'output',
     demandOption: true,