Command line interface for processing files with Hamlet over stdio.
Haml in, JavaScript templates out.
hamlet < template.haml > output.js
echo "%h1#title= @title" | hamlet
--runtime, -r [runtime_name]
Specifies the name of the globally available Hamlet runtime (default is 'require("hamlet-runtime")'). This is so the templates can be used with browserify on node.js or used manully in the browser.
```bash
hamlet -r "Hamlet" < template.haml > output.js
```
-a, --ast
If given the compiler outputs the AST as JSON rather than a JavaScript template.