docs: update

README.md

@@ -1,14 +1,30 @@
-# pure `bash`
+<h1 align="center">pure bash</h1> <p align="center">A [WIP] collection of
+pure bash alternatives to external processes.</p>
 
-A collection of pure `bash` alternatives to external processes.
+The goal of this repository is to document known and unknown methods of
+doing various tasks using only built-in bash features. Using the snippets
+from this guide can help to remove unneeded dependencies from your scripts
+and in most cases make them that little bit faster. I came across these
+tips and discovered a few while developing
+[neofetch](https://github.com/dylanaraps/neofetch),
+[pxltrm](https://github.com/dylanaraps/pxltrm) and some other smaller
+projects.
+
+This repository is open to contribution. If you see something that is
+incorrectly described, buggy or outright wrong, open an issue or send a
+pull request. If you know a handy snippet that is not included in this
+list, send a pull request!
+
+
+## Table of Contents
 
 <!-- vim-markdown-toc GFM -->
 
 * [Getting the terminal size (*in a script*).](#getting-the-terminal-size-in-a-script)
+* [Get the current date using `strftime`.](#get-the-current-date-using-strftime)
+* [Get the directory name of a file path.](#get-the-directory-name-of-a-file-path)
 * [Convert a hex color to RGB](#convert-a-hex-color-to-rgb)
 * [Convert an RGB color to hex.](#convert-an-rgb-color-to-hex)
-* [`printf` as a `date` replacement.](#printf-as-a-date-replacement)
-* [`dirname`](#dirname)
 
 <!-- vim-markdown-toc -->
 
@@ -30,6 +46,32 @@ get_term_size() {
 ```
 
 
+## Get the current date using `strftime`.
+
+Bash’s `printf` has a built-in method of getting the date which we can use
+in place of the `date` command in a lot of cases.
+
+**NOTE:** Requires `bash` 4+
+
+```sh
+date() {
+    # Usage: date "format"
+    # See: 'man strftime' for format.
+    printf "%($1)T\\n"
+}
+```
+
+## Get the directory name of a file path.
+
+Alternative to the `dirname` command.
+
+```sh
+dirname() {
+    # Usage: dirname "path"
+    printf ‘%s\n’ "${1%/*}/"
+}
+```
+
 ## Convert a hex color to RGB
 
 ```sh
@@ -43,7 +85,6 @@ hex_to_rgb() {
 }
 ```
 
-
 ## Convert an RGB color to hex.
 
 ```sh
@@ -54,31 +95,3 @@ rgb_to_hex() {
 ```
 
 
-## `printf` as a `date` replacement.
-
-Bash’s `printf` has a built-in method of getting the date which we can use
-in place of the `date` command in a lot of cases.
-
-**NOTE:** Requires bash4+
-
-```sh
-date() {
-    # Usage: date "format"
-    # See: 'man strftime' for format.
-    printf "%($1)T\\n"
-}
-```
-
-
-## `dirname`
-
-Extract the directory from a file path.
-
-```sh
-dirname() {
-    # Usage: dirname "path"
-    printf ‘%s\n’ "${1%/*}/"
-}
-```
-
-