Fix triangle example by adding missing dev-dependency (#139)

* Re-add winit 0.27 as dev dependency

This fixes a compile error in the `triangle` example accidentally
introduced in a previous PR.

* Check examples compile in GitHub Actions

Author: ebkalderon

.github/workflows/ci.yml

@@ -39,6 +39,12 @@ jobs:
       with:
         command: test
         args: --workspace --all-features
+    - name: Check examples
+      continue-on-error: ${{ matrix.continue-on-error || false }}
+      uses: actions-rs/cargo@v1
+      with:
+        command: check
+        args: --examples
 
   cargo-audit:
     name: cargo audit

Cargo.toml

@@ -37,6 +37,7 @@ wio = "0.2"
 pollster = "0.2"
 wgpu = "0.15"
 wgpu-subscriber = "0.1.0"
+winit = "0.27"
 
 [workspace]
 members = [".", "renderdoc-sys"]