Add some docs to README

README.md

@@ -1,8 +1,64 @@
 # neosfetch
 
-Minimal user-centric fetch script, successor to sfetch
+neosfetch is a minimal user-centric fetch script and the successor to sfetch.
+Unlike most fetch scripts out there, the fetch script itself is very small but
+easily extensible.
 
-# License
+## How does it work?
+
+Modules and ASCII art can be added by simply adding them to
+the config file created after running it for the first time.
+
+The config file is essential. Core features of the script are
+contained in the config file. This was done on purpose, because
+it allows the user greater control over how everything functions.
+
+This allows neosfetch to come bundled with few functions and support
+for fewer operating systems, because users can just add support for
+what they use. This increases speed, and reduces code that you will
+never need to use.
+
+## Built in modules
+
+neosfetch has a few built in modules that can be used in the `ns_pf`
+function. These are:
+
+- `d_user`: Print the current user
+- `d_hostname`: Print the hostname
+- `d_tram`: Print the RAM capacity in (by default) megabytes
+- `d_fram`: Print the amount of free RAM in (by default) megabytes
+- `d_uram`: Print the amount of used RAM in (by default) megabytes
+- `d_kernel`: Print the kernel used (usually but not always 'Linux')
+- `d_kernelv`: Print the kernel version
+- `d_cpu_model`: Print the CPU model
+- `d_cores`: Print the number of cores
+- `d_threads`: Print the number of threads
+
+The default config file also provides:
+
+- `d_pkgc`: Print the package count
+- `d_dist`: Print the distro
+
+Example: Display the user, hostname, distro, kernel version, cpu model and used RAM
+
+```
+ns_pf() {
+p "$(d_user)@$(d_hostname)"
+p ""
+p "Distro:   $(d_dist)"
+p "Kernel:   $(d_kernel) $(d_kernelv)"
+p "CPU:      $(d_cpu_model)"
+p "Used RAM: $(d_uram)"
+a
+}
+```
+
+## Art
+
+Currently neosfetch has no built in ASCII art. To add some, set the `$art` variable
+based on the value of `$dist` in the `rs` function in your config.
+
+## License
 
 Copyright (C) 2023 speedie