Apply isort and black

.githooks/pre-push

@@ -0,0 +1,9 @@
+#! /bin/bash
+
+ROOT_DIR="$(git rev-parse --show-toplevel)"
+source "${ROOT_DIR}/scripts/helpers"
+
+./scripts/check_isort
+./scripts/check_black
+
+header "Proceeding with push"

.github/workflows/lint-and-test.yml

@@ -0,0 +1,30 @@
+name: Lint and test
+
+on:
+  push:
+
+jobs:
+
+  isort:
+    runs-on: ubuntu-latest
+    container:
+      image: sergioteula/pytools
+      volumes:
+        - ${{github.workspace}}:/code
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v2
+    - name: Check imports order
+      run: ./scripts/check_isort
+
+  black:
+    runs-on: ubuntu-latest
+    container:
+      image: sergioteula/pytools
+      volumes:
+        - ${{github.workspace}}:/code
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v2
+    - name: Check code format
+      run: ./scripts/check_black

.shellcheckrc

@@ -0,0 +1,3 @@
+# ~/.shellcheckrc
+
+disable=SC1091

README.md

@@ -99,6 +99,14 @@ amazon = AmazonApi(KEY, SECRET, TAG, COUNTRY, throttling=4)  # Makes 1 request e
 amazon = AmazonApi(KEY, SECRET, TAG, COUNTRY, throttling=0)  # No wait time between requests
 ```
 
+## Contribution
+
+Activate githooks with:
+
+```
+git config core.hooksPath .githooks
+```
+
 ## License
 
 Copyright © 2021 Sergio Abad. See [license](https://github.com/sergioteula/python-amazon-paapi/blob/master/LICENSE) for details.