Add build script for RustFrame user guide using mdBook

docs/build.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env sh
+# Build and test the RustFrame user guide using mdBook.
+set -e
+# Ensure the library is compiled so examples can link against it.
+
+cargo clean
+
+cargo build --manifest-path ../Cargo.toml
+# Run embedded code examples as tests.
+mdbook test -L ../target/debug/deps "$@"
+# Finally, render the book.
+mdbook build "$@"
+
+cargo build
+cargo build --release