Reorganize documentation & update Readme

docs/Development.md

@@ -1,33 +1,63 @@
 # Meritoo Common Library
 Development-related information
 
+# Requirements
+
+* [Docker](https://www.docker.com)
+* Your favourite IDE :)
+
 # Getting started
 
-### Docker
+1. Build, create and start Docker's containers by running command:
 
-Build, create and start Docker's containers by running command:
+    ```bash
+    docker-compose up -d
+    ```
 
-```bash
-docker-compose up -d
-```
+2. Install packages by running command:
+
+    ```bash
+    docker-compose run composer install
+    ```
 
 > [What is Docker?](https://www.docker.com/what-docker)
 
-### Composer
+# Tests
 
-Install packages by running command:
+### Prerequisites
+
+Install required packages by running command: `docker-compose run composer install`.
+
+### Running tests
+
+#### Simply & quick, without code coverage
+
+Tests are running using Docker and `php-cli` service defined in `docker-compose.yml`. Example:
 
 ```bash
-docker-compose run composer install
+docker-compose exec php-cli phpunit --no-coverage
 ```
 
-Update packages by running command:
+You can also run them in container. In this case you have to run 2 commands:
+1. Enter container:
+
+    ```bash
+	docker-compose exec php-cli bash
+    ```
+
+2. Run tests:
+
+    ```bash
+    phpunit --no-coverage
+    ```
+
+#### With code coverage
 
 ```bash
-docker-compose run composer update
+docker-compose exec php-cli phpunit
 ```
 
-### Tests
+# Other
 
 Rebuild project and run tests by running command:
 
@@ -35,10 +65,4 @@ Rebuild project and run tests by running command:
 docker-compose exec php-cli phing
 ```
 
-Run tests only by running command:
-
-```bash
-docker-compose exec php-cli phpunit
-```
-
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