Add --filter and --help info.

README.md

@@ -30,6 +30,12 @@ pnpm start -- --no-render
 # parameters for GEGL operations.
 pnpm start -- --include-defaults
 
+# Run only the projects starting with a given name.
+pnpm start -- --filter 2022-03
+
+# See all the other options.
+pnpm start -- --help
+
 # Lint the code and run tests.
 pnpm test
 ```

source/driftingnebula.ts

@@ -19,6 +19,7 @@ async function main(): Promise<void> {
   const cli = meow(
     `
     Options
+      --filter <name>    Only render projects starting with <name>.
       --include-defaults Include default GEGL operation parameters.
       --no-render        Don't render any images.
     `,