Added welcome, installation & benefits section.

Author: hsehszroc

README.md

@@ -1,5 +1,41 @@
-# Welcome to TheWebSolver Pipeline
+## Welcome
+TheWebSolver Pipeline library follows the 🔗 Chain of Responsibility Design Pattern 🔗 to handle the given subject/request using pipes. The pipeline can accept any subject type, passes it through provided pipes and return the updated subject back.
 
-For usage details, visit [GitHub Wiki][Wiki].
+## Installation (via Composer)
 
-[Wiki]: https://github.com/TheWebSolver/pipeline/wiki
+Install library using composer command:
+
+```sh
+$ composer require thewebsolver/pipeline
+```
+
+## Benefits
+- Follows Chain of Responsibility design pattern by passing subject to pipeline handlers in order they were stacked.
+
+	> Use _`Pipeline::through()`_ method to pass main handlers as pipe. Optionally, pass additional handlers using _`Pipeline::pipe()`_ method.
+
+- Provides support for additional arguments that can be accepted by each handler passed using above methods.
+
+	> Use _`Pipeline::use()`_ method to pass as many arguments as required.
+
+- Provides support for catching [Pipe Exception][invalid] or [Unexpected Exception][unexpected] thrown by the handler.
+
+	> Use _`Pipeline::sealWith()`_ method to pass a closure to handle thrown exception.
+
+- Provides [bridge][b] for PHP Projects that implements [PSR-7][7], [PSR-15][15] (optional [PSR-11][11]) standards.
+
+	> Use [Queue based Request Handler][q] implementation to handle stacked middlewares inside [Request Handler][h]'s handle method (_`RequestHandlerInterface::handle()`_).
+
+## Usage
+
+For usage details, visit [Wiki page][w].
+
+[h]: https://www.php-fig.org/psr/psr-15/#21-psrhttpserverrequesthandlerinterface
+[q]: https://www.php-fig.org/psr/psr-15/meta/#queue-based-request-handler
+[w]: https://github.com/TheWebSolver/pipeline/wiki
+[b]: Src/PipelineBridge.php
+[7]: https://www.php-fig.org/psr/psr-7/
+[15]: https://www.php-fig.org/psr/psr-15/
+[11]: https://www.php-fig.org/psr/psr-11/
+[invalid]: Src/InvalidPipeError.php
+[unexpected]: Src/UnexpectedPipelineException.php