Setup CI and Bump Rust (#15)

.github/workflows/elixir-ci.yml

@@ -0,0 +1,27 @@
+name: Elixir CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Read .tool-versions
+        uses: marocchino/tool-versions-action@v1
+        id: versions
+      - name: Setup Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ steps.versions.outputs.rust }}
+          override: true
+      - name: Setup Elixir
+        uses: actions/setup-elixir@v1
+        with:
+          elixir-version: ${{ steps.versions.outputs.elixir }}
+          otp-version: ${{ steps.versions.outputs.erlang }}
+      - name: Install Dependencies
+        run: mix deps.get
+      - name: Run Tests
+        run: mix test

.tool-versions

@@ -1,2 +1,3 @@
 erlang 23.0.2
 elixir 1.10.4
+rust 1.44.1