Add github action workflow

.github/workflows/build.yml

@@ -0,0 +1,26 @@
+on: [push]
+
+name: CI
+
+jobs:
+  build:
+    name: Rust project
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+      - uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --release --all-features
+  publish:
+    name: Publish to GitHub Releases
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - uses: actions/download-artifact@v2
+        with:
+          name: artifact
+          path: target/release/statsd_auth_proxy

README.md

@@ -22,7 +22,7 @@ Made for statsd.
 ## Build
 
 ```bash
-cargo build --release
+cargo build --release --all-features
 ```
 
 ## Configuration