Update README.md

Author: Pavlusha311245

README.md

@@ -6,12 +6,31 @@
 _THIS PROJECT IN DEVELOPMENT. DON'T USE IT IN PRODUCTION_
 
 ## Quick start
-```shell
-composer require pavlusha311245/unit-php-sdk
-```
+
+### Pre-requirements
+
+* PHP >= 8.2
+* PHP curl extension
+* Composer >= 2
+
+### Installation
+* Create folder `mkdir example-php-project`
+* Open folder cd `example-php-project`
+* Init composer `composer init`
+* Add package `composer require pavlusha311245/unit-php-sdk`
+
+Congratulations! You installed package. Now you can use the full power of this SDK.
+#### Happy coding 😊
+
+## Documentation
+
+More information about API references you can find [here](https://unit-sdk.pavlusha.me/)
 
 ## Changelog
+
 More information about changes you can see [here](CHANGELOG.md)
 
 ## Contribution
-More info about contribution you can read [here](https://docs.github.com/en/get-started/quickstart/contributing-to-projects)
+
+More info about contribution you can
+read [here](https://docs.github.com/en/get-started/quickstart/contributing-to-projects)