docs: include --eval support (#174)

Author: privatenumber

README.md

@@ -75,6 +75,8 @@ Before extending into new frontiers, we need to improve the loaders API enough t
 - [ ] Hooks for customizing the REPL, including transpilation and tab completion. Support users pasting TypeScript (or CoffeeScript or whatever) into the REPL and having just as good an experience as with plain JavaScript.
 
    - [ ] Support top-level `await` in the REPL API, if possible.
+     
+- [ ] Allow customizing string inputs: `--eval` CLI flag, `Worker` constructor, stdin, etc.
 
 - [ ] Hooks for customizing the stack trace (in other words, a hook version of `Error.prepareStackTrace`). This would allow transpiled languages to improve the output.