diff --git a/README.md b/README.md
index 7adfaa9..0177cb5 100644
--- a/README.md
+++ b/README.md
@@ -2,15 +2,32 @@
 
 Features:
 * Conventional Commit linter
-* Generate CHANGELOG
+* Generate CHANGELOG and group of CHANGELOGs 
 * Bump version based on CHANGELOG
 
-# Examples
 
-You may use it as a Python package or a Docker container.
+# DevOps and Tool Developers Section
 
-## PIP Package
+## Examples
 
+You may use it as a CLI tool (Python PIP package) or a Docker container.
+
+### Usage as PIP Package (python is required)
+
+#### Check commit message
+
+```shell
+$ pygitver --check-commit-message "feat: conventional commit example"
+$ echo $?
+0
+$ pygitver --check-commit-message "non-conventional commit example"
+ERROR: Commit does not fit Conventional Commits requirements
+More about Conventional Commits: https://www.conventionalcommits.org/en/v1.0.0/
+$ echo $?
+1
+```
+
+#### Get current/next version
 ```shell
 $ git tag -l
 v0.0.1
@@ -19,11 +36,62 @@ $ pygitver --curr-ver
 v0.0.2
 $ pygitver --next-ver
 v0.0.3
-
 ```
 
+#### Generate changelog
+```shell
+$ pygitver changelog
+##########
+Change Log
+##########
+
+Version v0.0.3
+=============
+
+Features
+--------
+
+* Allow to trigger job manually
+
+Bug Fixes
+---------
+
+* Path for the default changelog template
+
+* Readme.md usage
+
+Improved Documentation
+----------------------
+
+* Add examples to the readme.md
+
+$ pygitver changelog --format json | jq .
+{
+  "version": "v0.0.3",
+  "bump_rules": {
+    "major": false,
+    "minor": false,
+    "patch": true
+  },
+  "changelog": {
+    "features": [
+      "allow to trigger job manually"
+    ],
+    "bugfixes": [
+      "path for the default changelog template",
+      "README.md usage"
+    ],
+    "deprecations": [],
+    "others": [],
+    "docs": [
+      "Add examples to the README.md"
+    ],
+    "non_conventional_commit": []
+  }
+}
+```
 
-## Docker Container
+### Usage as Docker container (docker engine is required)
 
 ```shell
 $ git tag -l
@@ -103,7 +171,15 @@ Get changelog:
                         Get changelog in TEXT or JSON format
 ```
 
-## Conventional Commits Rules
+## Custom CHANGELOG Templates
+
+* Take as an example: `./src/pygitver/templates/changelog.tmpl`
+* Place somewhere in your project custom template
+* Send environment variable `PYGITVER_TEMPLATE_CHANGELOG` to docker 
+  on run with full template path in Docker (usually `/app/...`)
+
+
+# Conventional Commits Rules
 The tool supports simplified Conventional Commits, which are described in this section.
 
 The commit message should be structured as follows:
@@ -117,7 +193,7 @@ The commit contains the following structural elements to communicate intent to t
 * `BREAKING CHANGE:` a commit that has a footer `BREAKING CHANGE:`, or appends a `!` after the type/scope, introduces a breaking API change (correlating with `MAJOR` in Semantic Versioning). A BREAKING CHANGE can be part of commits of any type.
 * Other allowed prefixes: `build:`, `chore:`, `ci:`, `docs:`, `style:`, `refactor:`, `perf:`, `test:`. These correlate with `PATCH` in Semantic Versioning. 
 
-### Conventional Commits Examples:
+## Conventional Commits Examples:
 
 Commit without scope without breaking change.
 ```
@@ -143,10 +219,10 @@ feat(lang): add Polish language
 ```
 
 
-## Users (Developers) Section
+# Users (Developers) Section
 
 
-### Install pygitver
+## Install Conventional Commit Git Hook Checker
 Run in the `git` root folder of the target repository on localhost. 
 ```shell
 docker run --rm -v $(pwd):/app -w /app --user "$(id -u):$(id -g)" --entrypoint '' panpuchkov/pygitver /pygitver/scripts/install.sh
@@ -155,7 +231,7 @@ docker run --rm -v $(pwd):/app -w /app --user "$(id -u):$(id -g)" --entrypoint '
 * It doesn't matter what the current branch is.
 * You should install it in every repository that needs conventional commit messages.
 
-### Update pygitver
+## Update pygitver
 
 Run in a terminal in any folder:
 
@@ -163,7 +239,7 @@ Run in a terminal in any folder:
 docker pull panpuchkov/pygitver
 ```
 
-### Usage
+## Git Conventional Commit Linter
 
 You don't need to use it directly; it will be used automatically on each git commit.
 
@@ -182,70 +258,26 @@ $ git commit -am "feat: test"
 
 _Note: repeat this procedure for each repository_
 
-## DevOps and Tool Developers Section
-
-### Usage
-
-_**Note:** The tool is running in the docker container and mounting your repository. 
-It means that you have to run it just from the repository's root directory, 
-from the directory with `.git` folder._
-
-```shell
-docker run --rm -v $(pwd):/app -w /app panpuchkov/pygitver --help
-```
-
-#### Examples
-
-Check if the git commit message is valid for Conventional Commits:
-```shell
-$ docker run --rm -v $(pwd):/app -w /app panpuchkov/pygitver --check-commit-message "feat: conventional commit message"
-$ echo $? # get exit code
-0
-$ docker run --rm -v $(pwd):/app -w /app panpuchkov/pygitver --check-commit-message "non-conventional commit message"
-ERROR: Commit does not fit Conventional Commits requirements
-$ echo $? # get exit code
-1
-```
-
-Get current version (last git tag):
-```shell
-$ docker run --rm -v $(pwd):/app -w /app --user "$(id -u):$(id -g)" panpuchkov/pygitver --curr-ver
-v0.0.3
-```
-
-Get next version (bump last git tag):
-```shell
-$ docker run --rm -v $(pwd):/app -w /app --user "$(id -u):$(id -g)" panpuchkov/pygitver --next-ver
-v1.0.0
-```
-
-#### Custom CHANGELOG Templates
-
-* Take as an example: `./src/templates/changelog.tmpl`
-* Place somewhere in your project custom template
-* Send environment variable `PYGITVER_TEMPLATE_CHANGELOG` to docker 
-  on run with full template path in Docker (usually `/app/...`)
-
-### Development
+# Development
 
-#### Build Docker
+## Build Docker
 ```shell
 docker build -t pygitver .
 ```
 
-#### Install to Localhost
+## Install to Localhost
 ```shell
 pip install -r requirements-dev.txt
 ```
 
-#### Test on Localhost
+## Test on Localhost
 
-##### Run all checks
+### Run all checks
 ```shell
 tox
 ```
 
-##### A single file of the test run
+### A single file of the test run
 ```shell
 tox -e coverage -- ./tests/test_git.py -vv
 ```
@@ -254,11 +286,11 @@ or
 coverage run -m pytest -- ./tests/test_git.py 
 ```
 
-#### Build pip package
+## Build pip package
 
 Linux
 ```shell
-python3 -m build
+python -m build
 ```
 
 For `Debian` based OS: