Add super basic readme for the sourcehut project

README.md

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+# Tangara
+
+Tangara is an open-hardware portable music player. It runs on an ESP32, fits in
+your pocket, and has a battery that lasts all day.
+
+## Source Repositories
+
+[tangara-fw](https://git.sr.ht/~jacqueline/tangara-fw): The ESP32 firmware,
+comprising the bulk of Tangara's functionality. This is probably the repo
+that you're most interested in!
+
+[tangara-hw](https://git.sr.ht/~jacqueline/tangara-hw): Sources for the entire
+physical device. Includes both the case/enclosure, and the PCBs.
+
+[tangara-samd-fw](https://git.sr.ht/~jacqueline/tangara-samd-fw): Firmware for
+the SAMD21 co-processor that manages USB connectivity, charging, and power
+management of the ESP32.
+
+## Contributing
+
+This repo is currently unlisted until we've gotten some kind of crowdfund together.
+How did you get here?