add examples to automated build

Author: timbeurskens

.github/workflows/rust.yml

@@ -17,6 +17,6 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Build
-      run: cargo build --verbose --release
+      run: cargo build --verbose --release --examples --bins --lib
     - name: Run tests
       run: cargo test --verbose --release