Add attrs readme

attrs/README.md

@@ -0,0 +1,57 @@
+# `attrs` Subpackage in `elem-go`
+
+The `attrs` subpackage within `elem-go` offers a comprehensive set of constants representing HTML attributes, enhancing the process of setting attributes for HTML elements in a type-safe manner. This document outlines the usage and features of the `attrs` subpackage.
+
+## Table of Contents
+
+- [Introduction](#introduction)
+- [Usage](#usage)
+- [Available HTML Attributes](#available-html-attributes)
+- [Using `Props` Type](#using-props-type)
+- [Examples](#examples)
+
+## Introduction
+
+The `attrs` subpackage is designed to simplify the process of defining HTML attributes in Go. By providing constants for common attributes, it helps avoid errors due to typos and enhances code readability.
+
+## Usage
+
+To use the `attrs` subpackage, import it alongside the main `elem` package:
+
+```go
+import (
+    "github.com/chasefleming/elem-go/attrs"
+)
+```
+
+## Available HTML Attributes
+
+The subpackage includes a wide range of constants representing universal attributes, link/script attributes, meta attributes, image/embed attributes, semantic text attributes, form/input attributes, interactive attributes, miscellaneous attributes, table attributes, iframe attributes, audio/video attributes, and video-specific attributes.
+
+For instance, some of the constants are:
+
+- Universal Attributes like `Class`, `ID`, `Style`
+- Link/Script Attributes such as `Href`, `Src`
+- Form/Input Attributes including `Type`, `Value`, `Placeholder`
+
+For a full list of available constants, see the [attrs.go file](attrs.go).
+
+## Using `Props` Type
+
+The `Props` type is a map of strings that can be used to pass attribute values to HTML elements in a structured way. This type-safe approach ensures the correct assignment of attributes to elements.
+
+## Examples
+
+Here's an example of using `attrs` constants to set attributes for a button:
+
+```go
+buttonAttrs := attrs.Props{
+    attrs.Type:  "button",
+    attrs.Class: "btn btn-primary",
+    attrs.ID:    "submitBtn",
+}
+
+button := elem.Button(buttonAttrs, elem.Text("Submit"))
+```
+
+In this example, attributes for the button element are defined using the attrs.Props map with attrs constants.