experimenting shell history into README

README.md

@@ -0,0 +1,18 @@
+# E-Ink Spotprice Viewer
+
+ -- started out from the e-ink-hello example on https://github.com/ImplFerris/esp32-projects
+
+## Toolchain
+
+```sh
+cargo install espup
+espup install  --name book-1.0.0 --toolchain-version 1.90.0
+```
+
+## Build and Run
+
+```sh
+# should do the right thing due to toolchain config
+cargo build --release
+espflash flash --monitor --chip esp32s3 --log-format defmt target/xtensa-esp32s3-none-elf/release/e-ink-spotprices
+```