Adding table of contents to readme.

Author: CodingAleCR

README.md

@@ -6,29 +6,32 @@
 [![codecov](https://codecov.io/gh/CodingAleCR/http_interceptor/branch/master/graph/badge.svg)](https://codecov.io/gh/CodingAleCR/http_interceptor)
 [![Star on GitHub](https://img.shields.io/github/stars/codingalecr/http_interceptor.svg?style=flat&logo=github&colorB=deeppink&label=stars)](https://github.com/codingalecr/http_interceptor)
 
-A middleware library that lets you modify requests and responses if desired. Based of on [http_middleware](https://github.com/TEDConsulting/http_middleware)
+This is a plugin that lets you intercept the different requests and responses from Dart's http package. You can use to add headers, modify query params, or print a log of the response.
 
-## Getting Started
+## Quick Reference
 
-This is a plugin that lets you intercept the different requests and responses from Dart's http package. You can use to add headers, modify query params, or print a log of the response.
+- [Installation](#installation)
+- [Usage](#usage)
+  - [Building your own interceptor](#building-your-own-interceptor)
+  - [Using your interceptor](#using-your-interceptor)
+  - [Retrying requests](#retrying-requests)
+- [Having trouble? Fill an issue](#troubleshooting)
 
-### Installing
+## Installation
 
 Include the package with the latest version available in your `pubspec.yaml`.
 
 ```dart
     http_interceptor: any
 ```
 
-### Importing
+## Usage
 
 ```dart
 import 'package:http_interceptor/http_interceptor.dart';
 ```
 
-### Using `http_interceptor`
-
-#### Building your own interceptor
+### Building your own interceptor
 
 In order to implement `http_interceptor` you need to implement the `InterceptorContract` and create your own interceptor. This abstract class has two methods: `interceptRequest`, which triggers before the http request is called; and `interceptResponse`, which triggers after the request is called, it has a response attached to it which the corresponding to said request. You could use this to do logging, adding headers, error handling, or many other cool stuff. It is important to note that after you proccess the request/response objects you need to return them so that `http` can continue the execute.
 
@@ -72,11 +75,11 @@ class WeatherApiInterceptor implements InterceptorContract {
 }
 ```
 
-#### Using your interceptor
+### Using your interceptor
 
 Now that you actually have your interceptor implemented, now you need to use it. There are two general ways in which you can use them: by using the `HttpWithInterceptor` to do separate connections for different requests or using a `HttpClientWithInterceptor` for keeping a connection alive while making the different `http` calls. The ideal place to use them is in the service/provider class or the repository class (if you are not using services or providers); if you don't know about the repository pattern you can just google it and you'll know what I'm talking about. ;)
 
-##### Using interceptors with Client
+#### Using interceptors with Client
 
 Normally, this approach is taken because of its ability to be tested and mocked.
 
@@ -107,7 +110,7 @@ class WeatherRepository {
 }
 ```
 
-##### Using interceptors without Client
+#### Using interceptors without Client
 
 This is mostly the straight forward approach for a one-and-only call that you might need intercepted.
 
@@ -137,9 +140,9 @@ class WeatherRepository {
 }
 ```
 
-#### Retrying requests (NEW 🎉)
+### Retrying requests
 
-Sometimes you need to retry a request due to different circumstances, an expired token is a really good example. Here's how you could potentially implement an expired token retry policy with `http_interceptor`.
+ **(NEW 🎉)** Sometimes you need to retry a request due to different circumstances, an expired token is a really good example. Here's how you could potentially implement an expired token retry policy with `http_interceptor`.
 
 ```dart
 class ExpiredTokenRetryPolicy extends RetryPolicy {
@@ -158,6 +161,6 @@ class ExpiredTokenRetryPolicy extends RetryPolicy {
 
 You can also set the maximum amount of retry attempts with `maxRetryAttempts` property or override the `shouldAttemptRetryOnException` if you want to retry the request after it failed with an exception.
 
-### Issue Reporting
+## Troubleshooting
 
 Open an issue and tell me, I will be happy to help you out as soon as I can.