feat: gitlint

Add gitlint settings to the master.

.gitlint

@@ -0,0 +1,5 @@
+[general]
+contrib=contrib-title-conventional-commits
+
+[contrib-title-conventional-commits]
+types = build,ci,docs,feat,fix,perf,refactor,style,test

.travis.yml

@@ -7,4 +7,5 @@ install:
   - pip install pipenv
   - pipenv install
 script:
+  - gitlint
   - python tests.py

Pipfile

@@ -10,6 +10,7 @@ requests = "*"
 packaging = "*"
 fire = "*"
 configparser = "*"
+gitlint = "*"
 
 [requires]
 python_version = "3.7"

README.md

@@ -62,9 +62,13 @@ If you want to schedule your updates, edit your /etc/crontab file.
 
 The following instructions help you for developing.
 
+* Check out the [Contribution Guidelines](CONTRIBUTING.md).
 * Clone this git repo
 * Install pipenv: `pip install pipenv`
 * Install all dependencies: `pipenv install`
+* You can run the tests with `python tests.py`
+* After changes and commit, you can check if your commit message follows the contribution guidelines with `gitlint`. If there is a problem, gitlint will show you a error message.
+* After pushing, you should check the build status which currently checks the tests and the commit message format.
 
 ## Contributors