initial commit: The OrbTK book source tree

All files have a strong relation to the book sources of the
rust-lang project itself. This may help to lower the burden
for intrested people to get involved in OrbTK as well as
reuse workflow habits.

* LICENSE-MIT: The projekt licensing terms
* README.md: Github frontpage
* CONTIRBUTING.md: Advises on howto help improving the book
* style-guide.md: Advises on howto improve the readability of
  generated prose and code.
* tools: layout helper scripts and rust-code
* ci: continius integration helper scripts
* .gitattributes: set git default behaviours
* .gitignore: keep source tree sane
* Cargo.toml: package dependencies
* rustfmt.toml: formatting rules for rust code
* book.toml: mdBook dependencies

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>

tools/nostarch.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+set -eu
+
+cargo build --release
+
+mkdir -p tmp
+rm -rf tmp/*.md
+rm -rf tmp/markdown
+
+# Render the book as Markdown to include all the code listings
+MDBOOK_OUTPUT__MARKDOWN=1 mdbook build -d tmp
+
+# Get all the Markdown files
+ls tmp/markdown/${1:-""}*.md | \
+# Extract just the filename so we can reuse it easily.
+xargs -n 1 basename | \
+# Remove all links followed by `<!-- ignore -->``, then
+# Change all remaining links from Markdown to italicized inline text.
+while IFS= read -r filename; do
+  < "tmp/markdown/$filename" ./target/release/remove_links \
+    | ./target/release/link2print \
+    | ./target/release/remove_markup \
+    | ./target/release/remove_hidden_lines > "tmp/$filename"
+done
+# Concatenate the files into the `nostarch` dir.
+./target/release/concat_chapters tmp nostarch