[PR] Adding concepts clarification and tutorial

.github/dependabot.yml

@@ -0,0 +1,8 @@
+version: 2
+updates:
+- package-ecosystem: mix
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "07:00"
+    timezone: Europe/London

.github/workflows/ci.yml

@@ -0,0 +1,43 @@
+name: build
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    name: Build and test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        otp: ['24.3.4']
+        elixir: ['1.14.1']
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Elixir
+      uses: erlef/setup-beam@v1
+      with:
+        otp-version: ${{ matrix.otp }}
+        elixir-version: ${{ matrix.elixir }} 
+    - name: Restore deps and _build cache
+      uses: actions/cache@v3
+      with:
+        path: |
+          deps
+          _build
+        key: deps-${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles('**/mix.lock') }}
+        restore-keys: |
+          deps-${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}
+    - name: Install dependencies
+      run: mix deps.get
+    - name: Check code is formatted
+      run: mix format --check-formatted
+    - name: Run Tests
+      run: mix coveralls.json
+      env:
+        MIX_ENV: test
+        AUTH_API_KEY: ${{ secrets.AUTH_API_KEY }}
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v1

.gitignore

@@ -35,3 +35,46 @@ jspm_packages
 
 # Optional REPL history
 .node_repl_history
+
+
+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where 3rd-party dependencies like ExDoc output generated docs.
+/doc/
+
+# Ignore .fetch files in case you like to edit your project deps locally.
+/.fetch
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+app-*.tar
+
+# Ignore assets that are produced by build tools.
+/priv/static/assets/
+
+# Ignore digested assets cache.
+/priv/static/cache_manifest.json
+
+# In case you use Node.js/npm, you want to ignore these.
+npm-debug.log
+/assets/node_modules/
+
+# Env files
+.env
+cache.dets
+cache_test.dets
+
+# Noise
+.DS_Store