Added Mint logo, fixed some bugs and added docs.

README.md

@@ -1,2 +1,100 @@
-# zFetch
-Minimalistic system fetcher for Linux platform written in C99.
+<div align="center">
+    <h1>zFetch</h1>
+    <img src="imgs/preview.gif">
+    <h6><i>Lightweight system information fetcher for Linux.</i></h6>
+
+![](https://git.marcocetica.com/marco/zfetch/actions/workflows/build.yml/badge.svg)
+![Static Badge](https://img.shields.io/badge/license-MIT-blue)
+</div>
+
+**zFetch** is a lightweight system information fetcher for Linux written in C99.
+Unlike other system fetchers, this tool focuses on providing a simple, easy-to-remember
+interface and configuration syntax, extremely fast startup and a reasonable amount
+of core features.
+
+## Installation
+zFetch consists on a single source file which can be compiled with any modern C
+compiler (Clang/GCC) on a Linux-based system. In order to build it, you can just run
+`gcc zfetch.c -o zfetch` or use the following Makefile rule:
+
+```sh
+$ make clean all
+rm -f *.o *.a zfetch
+clang -Wall -Wextra -Werror -pedantic-errors -Wwrite-strings -std=c99 -O3 zfetch.c -o zfetch
+```
+
+In both cases, you will get a binary file named `zfetch` that you can move wherever you
+want.
+
+## Usage
+As stated before, I've built zFetch to be extremely simple to use since I believe that system
+fetchers play a paramount role on providing essential data to whoever has a lot of machines to manage.
+
+In its most basic form, you can just invoke the program without any additional parameter and it will
+run with all option enabled, that is:
+
+![](imgs/ex1.png)
+
+If you instead would like to granularly enable or disable some features,
+you can do so by creating a configuration file in one of the following paths:
+
+- `$HOME/.zfetch.conf`;  
+- `$HOME/.config/zfetch/conf` (**this takes precedence**).
+
+Inside it, you can specify which option to enable and which one to disable:
+
+```conf
+HOST   = 1
+OS     = 0
+UPTIME = 1
+CPU    = 1
+MEMORY = 1
+DISK   = 1
+IP     = 1
+LOGO   = 1
+BARS   = 0
+```
+
+Any other line will be considered invalid and silently skipped by the builtin parser.
+To retrieve which options are currently enabled, you can run the program with the `-s` flag, that is:
+
+```sh
+$ ./zfetch  --list-opts # or -s
+HOST   : ON
+OS     : OFF
+UPTIME : ON
+CPU    : ON
+MEMORY : ON
+DISK   : ON
+IP     : ON
+LOGO   : ON
+BARS   : OFF
+```
+
+You can also dynamically specify a different path by using the `-c` CLI argument:
+
+```sh
+$ ./zfetch  -c $PWD/config -s
+Using custom config file: '/home/marco/Projects/zfetch/config'
+HOST   : OFF
+OS     : OFF
+UPTIME : OFF
+CPU    : OFF
+MEMORY : ON
+DISK   : ON
+IP     : ON
+LOGO   : OFF
+BARS   : ON
+```
+
+Finally, you can list all supported distribution, using the `--list-logos/-a` flag:
+
+```sh
+$ /zfetch -a
+Available logos: alpine, arch, debian, fedora, mint, gentoo, artix, linux, nixos, redhat, slackware, suse, ubuntu.
+```
+
+
+## License
+
+[MIT](https://choosealicense.com/licenses/mit/)