Improve README Documentation

[KOrtizLedezma]

Pull Request Description:

This PR improves the documentation for the Smith - Personal Portfolio Website project by enhancing clarity and usability for new contributors and users. The following changes have been made:

Customization Instructions:

Provided instructions for customizing images, text, and theme colors.

Running Locally:

Added a step-by-step guide for running the project locally using a development server (like live-server).

Dependencies:

Listed the external dependencies such as Ionicons and Google Fonts.

These changes will make the repository more welcoming and accessible to new contributors and users. I believe this will improve the overall experience for anyone who wants to fork or contribute to the project.