Update CI config

.github/workflows/ci.yml

@@ -0,0 +1,55 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  test:
+    runs-on: ubuntu-18.04
+    env:
+      MIX_ENV: test
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - pair:
+              elixir: 1.6
+              otp: 19
+          - pair:
+              elixir: 1.12
+              otp: 24
+            lint: lint
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: erlef/setup-elixir@v1
+        with:
+          otp-version: ${{matrix.pair.otp}}
+          elixir-version: ${{matrix.pair.elixir}}
+
+      - uses: actions/cache@v2
+        with:
+          path: |
+            deps
+            _build
+          key: ${{ runner.os }}-mix-${{matrix.pair.elixir}}-${{matrix.pair.otp}}-${{ hashFiles('**/mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-mix-
+
+      - run: mix deps.get
+
+      - run: mix format --check-formatted
+        if: ${{ matrix.lint }}
+
+      - run: mix deps.unlock --check-unused
+        if: ${{ matrix.lint }}
+
+      - run: mix deps.compile
+
+      - run: mix compile --warnings-as-errors
+        if: ${{ matrix.lint }}
+
+      - run: mix test

README.md

@@ -1,5 +1,8 @@
 # MakeupC
-A [Makeup](https://github.com/tmbb/makeup/) lexer for the C language.
+
+[![Build Status](https://github.com/elixir-makeup/makeup_c/workflows/CI/badge.svg)](https://github.com/elixir-makeup/makeup_c/actions)
+
+A [Makeup](https://github.com/elixir-makeup/makeup/) lexer for the C language.
 
 ## Installation
 

mix.exs

@@ -8,7 +8,7 @@ defmodule MakeupC.MixProject do
     [
       app: :makeup_c,
       version: @version,
-      elixir: "~> 1.4",
+      elixir: "~> 1.6",
       start_permanent: Mix.env() == :prod,
       deps: deps(),
       # Package
@@ -46,7 +46,7 @@ defmodule MakeupC.MixProject do
   defp deps do
     [
       {:makeup, "~> 1.0"},
-      {:ex_doc, ">= 0.0.0", only: [:dev, :docs]},
+      {:ex_doc, ">= 0.0.0", only: [:dev, :docs]}
     ]
   end
 
@@ -57,5 +57,4 @@ defmodule MakeupC.MixProject do
       main: "Makeup.Lexers.CLexer"
     ]
   end
-
 end