Update README

Author: bryanadamloh97

README.md

@@ -20,6 +20,14 @@ Powerful URL shortening tool using different drivers for your Laravel projects
     - [Instantiate Shortener](#instantiate-shortener)
     - [Changing driver](#changing-driver)
 - [Available Drivers](#available-drivers)
+  - [Bit.ly](#bitly)
+  - [TinyURL](#tinyurl)
+  - [Shorte.st](#shortest)
+  - [Is.gd](#isgd)
+  - [Cutt.ly](#cuttly)
+  - [Hide.uri](#hideuri)
+  - [Firebase](#firebase)
+  - [Ouo.io](#ouoio)
 - [Changelog](#changelog)
 - [Security](#security)
 - [Credits](#credits)
@@ -124,7 +132,8 @@ You can change the default driver by setting `URL_SHORTENER_DRIVER={driver}` in
 or publish the config file and make your changes there directly.
 
 ## Available Drivers
-There are total of 8 drivers available in this package. Below is a list of drivers with their respective specs:
+There are total of 8 drivers available in this package. By default, this package will use `Bit.ly` as the main driver.
+Below is a list of drivers with their respective specs:
 
 Service                        | API Token | Driver name | Analytics | Monetization
 -------------------------------|-----------|-------------|-----------|-------------
@@ -137,6 +146,99 @@ Service                        | API Token | Driver name | Analytics | Monetizat
 [Firebase Links](#firebase)    | yes       | `firebase`  | yes       | no
 [Ouo.io](#ouoio)               | no        | `ouo_io`    | yes       | yes
 
+### Bit.ly
+[Official Website](https://bitly.com)
+
+The main default driver for this package. It runs on Bit.ly API and currently using Version 4. To access the Bit.ly driver
+in this package, you need to provide `generic access token` for OAuth Authentication which can be retrieved in their Bit.ly
+Link Management Dashboard. You can parse in your own custom short URL domain (Paid Version) as well. 
+Currently, there are 2 variables that needs to be set to use the driver.
+
+Variable                  | Description
+--------------------------|----------------------
+`URL_SHORTENER_API_TOKEN` | Bit.ly API token
+`URL_SHORTENER_PREFIX`    | Custom short URL domain, by default it's `bit.ly`
+
+### TinyURL
+[Official Website](https://tinyurl.com)
+
+Driver that runs on TinyURL API and currently using Version 2. To access the TinyURL driver in this package,
+you need to provide the `API token` for OAuth Authentication which can be retrieved in the TinyURL's account setting.
+You can parse in your own custom short URL domain (Paid Version) as well. TinyURL provides 3 free custom URL domain prefix
+which you can check out at their website. Currently, there are 2 variables that needs to be set to use the driver.
+
+Variable                  | Description
+--------------------------|----------------------
+`URL_SHORTENER_API_TOKEN` | TinyURL API token
+`URL_SHORTENER_PREFIX`    | Custom short URL domain, by default it's `tinyurl.com`
+
+### Shorte.st
+[Official Website](https://shorte.st)
+
+Driver that runs on Shorte.st API and currently using Version 1. To access the Shorte.st driver in this package,
+you need to provide an `access token` which can be retrieved after you have register for a Shorte.st account.
+This driver has monetization support where each link that has been clicked will earn a small amount of cash.
+Currently, there are only 1 variable that needs to be set to use the driver.
+
+Variable                  | Description
+--------------------------|-------------------------
+`URL_SHORTENER_API_TOKEN` | Shorte.st API token
+
+### Is.gd
+[Official Website](https://is.gd)
+
+Driver that runs on Is.gd API and currently using Version 1. No API token is needed for this API as there is no
+authentication required when sending API request. Currently, there are only 1 variable that needs to be set to use the driver.
+This variable determines whether statistic is enabled or disabled when shorten an URL link.
+
+Variable                  | Description
+--------------------------|------------------------------
+`URL_SHORTENER_ANALYTICS` | Enable or disable statistics
+
+### Cutt.ly
+[Official Website](https://cutt.ly)
+
+Driver that runs on Cutt.ly API and currently using Version 1. To access the Cutt.ly driver in this package,
+you need to provide an `API token` which can be retrieved in Cutt.ly dashboard. API token will be used within the query
+parameters as a method of authentication. This driver comes with analytics and statistics.
+Currently, there are only 1 variable that needs to be set to use the driver.
+
+Variable                  | Description
+--------------------------|----------------------
+`URL_SHORTENER_API_TOKEN` | Cutt.ly API token
+
+### Hide.uri
+[Official Website](https://hideuri.com)
+
+Driver that runs on Hide.uri API and currently using Version 1. No API token is needed for this API as no authentication
+is required when sending API request. No variable is needed to setup the driver and you can use straight out of the box.
+Check the official website if there is any rate limiting on API calls.
+
+### Firebase Links
+[Official Website](https://firebase.google.com/docs/dynamic-links)
+
+Driver that runs on Google Firebase API and currently using Version 1. To access the Firebase driver in this package,
+you need to provide an `access token` and a URI prefix which can be retrieved in your Firebase console `Web API Token`.
+The URI prefix can be set using your own custom domain or any names and it must ends with `.page.link`.
+The suffix can have the value `SHORT` or `UNGUESSABLE`.
+
+Variable                 | Description                        
+-------------------------|------------------------------------
+`URL_SHORTENER_API_TOKEN`| Firebase API token                 
+`URL_SHORTENER_PREFIX`   | Custom URL prefix                  
+`URL_SHORTENER_SUFFIX`   | Creation method during URL shortening
+
+### Ouo.io
+[Official Website](https://ouo.io)
+
+Driver that runs on Ouo.io API and currently using Version 1. To access the Ouo.io driver in this package,
+provide the `API token` that is available in the Ouo.io account dashboard.
+This driver has monetization support where each link that has been clicked will earn a small amount of cash.
+
+Variable                  | Description
+--------------------------|----------------------
+`URL_SHORTENER_API_TOKEN` | Ouo.io API token
+
 ## Changelog
 Please see [CHANGELOG](CHANGELOG.md) for more information what has been changed in recent versions.