Don't worry about the code looking dirty, embryonic code always does. If it's a big enough tool it may warrant setting up a GitHub Pages site for it, just to make it a bit easier to find when somebody is suffering from the same problems you were.
In terms of new features, once you've put the repo on GitHub (or wherever) other people will likely suggest features as issues or modify the program themselves (and hopefully open a PR).
Don't worry about the code looking dirty, embryonic code always does. If it's a big enough tool it may warrant setting up a GitHub Pages site for it, just to make it a bit easier to find when somebody is suffering from the same problems you were.
In terms of new features, once you've put the repo on GitHub (or wherever) other people will likely suggest features as issues or modify the program themselves (and hopefully open a PR).