Update changelog and readme

CHANGELOG.md

@@ -5,6 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [unpublished]
+
+### Added
+
+- Install command and instructions in README.md
+
+### Changed
+
+- Sample app now is a separate target in the Makefile and shows how to use the library with a sample dataset
+
 ## [1.0.4] 2024-03-06
 
 ### Added

README.md

@@ -4,11 +4,14 @@
 
 Bayesian Network Classifiers using libtorch from scratch
 
+## Installation
+
 ### Release
 
 ```bash
 make release
 make buildr
+sudo make install
 ```
 
 ### Debug & Tests
@@ -21,8 +24,9 @@ make coverage
 
 ### Sample app
 
+After building and installing the release version, you can run the sample app with the following commands:
+
 ```bash
-make release
 make sample
 make sample fname=tests/data/glass.arff
 ```