Initial commit

Much of the content here is a direct port from https://github.com/japaric/discovery

ci/install.sh

@@ -0,0 +1,19 @@
+set -euxo pipefail
+
+main() {
+    curl -LSfs https://japaric.github.io/trust/install.sh | \
+        sh -s -- \
+           --force \
+           --git rust-lang-nursery/mdBook \
+           --tag v0.1.5 \
+           --target x86_64-unknown-linux-musl
+
+    rustup target add thumbv6m-none-eabi
+
+    pip install linkchecker --user
+
+    # sanity check that a linker is present
+    which arm-none-eabi-ld
+}
+
+main