Integrate pre-commit tool

.pre-commit-config.yaml

@@ -0,0 +1,25 @@
+repos:
+- repo: git://github.com/pre-commit/pre-commit-hooks
+  sha: v1.1.1
+  hooks:
+  - id: trailing-whitespace
+  - id: flake8
+  - id: check-merge-conflict
+  - id: end-of-file-fixer
+  - id: name-tests-test
+  - id: debug-statements
+  - id: check-added-large-files
+  - id: check-ast
+  - id: check-byte-order-marker
+  - id: check-case-conflict
+  - id: check-json
+  - id: pretty-format-json
+  - id: check-symlinks
+  - id: check-yaml
+  - id: detect-private-key
+  - id: requirements-txt-fixer
+
+- repo: git://github.com/Lucas-C/pre-commit-hooks
+  sha: v1.1.1
+  hooks:
+  - id: remove-tabs

.pre-commit-config.yaml.failing

@@ -0,0 +1,15 @@
+repos:
+- repo: git://github.com/pre-commit/pre-commit-hooks
+  sha: v1.1.1
+  hooks:
+  - id: double-quote-string-fixer
+
+- repo: git://github.com/chewse/pre-commit-mirrors-pydocstyle
+  sha: v2.1.1
+  hooks:
+  - id: pydocstyle
+
+- repo: git://github.com/ambv/black
+  sha: 18.4a2
+  hooks:
+  - id: black

README.rst

@@ -36,6 +36,13 @@ You may want to perform something like:
     $ source venv/bin/activate
     $ pip install -r requirements.txt
 
+It is also recommended to make linters run to keep up with coding standards
+when you do commits:
+
+.. code-block:: console
+
+    $ pre-commit install
+
 Any pull request should include regenerated files, which can be generated by
 running:
 

requirements.txt

@@ -1,2 +1,3 @@
 invoke
 packaging
+pre-commit