Added Roadmap

Roadmap.md

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+# Roadmap
+
+This living document details our plans for `up`. If you would like to request features or move something up the roadmap, raise an issue!
+
+> The words `MUST`, `MUST NOT`, `SHOULD`, `SHOULD NOT`, and `MAY` are used in accordance with [RFC 2119](https://tools.ietf.org/html/rfc2119)
+
+- [ ] MVP - Minimum Viable Product.
+	- `up static` and `up proxy` MUST work.
+	- `up kill` MUST work.
+- [ ] List servers option.
+	- `up list` MUST provide list of servers running by parsing nginx's `sites-available` and `sites-enabled` folders.
+- [ ] Option for HTTPS.
+	- MUST add a `-s` flag to enable HTTPS config.
+	- MAY add a `-c` flag to use `certbot` to automatically generate certificates using letsencrypt.
+
+Want more features? Raise an [issue!](https://github.com/codefeathers/up-serve/issues)
+
+## Stretch goals
+
+### ♦ Create an `up` client to deploy from anywhere