Initial commit

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

ci/script.sh

@@ -0,0 +1,35 @@
+set -euxo pipefail
+
+main() {
+    # test that building the book works
+    mdbook build
+
+    linkchecker book
+
+    # first (fast) pass: check that examples compile
+    for chapter in $(echo src/*); do
+        if [ ! -f $chapter/Cargo.toml ]; then
+            continue
+        fi
+
+        pushd $chapter
+        cargo check
+        popd
+    done
+
+    # second (slow) pass: check that examples link
+    for chapter in $(echo src/*); do
+        if [ ! -f $chapter/Cargo.toml ]; then
+            continue
+        fi
+
+        pushd $chapter
+        cargo build
+        cargo build --release
+        popd
+    done
+}
+
+if [ $TRAVIS_BRANCH != master ]; then
+    main
+fi