Merge branch 'develop'

Adds readme

readme.txt

+=== ETH Simple Shortlinks ===
+Contributors: ethitter
+Donate link: https://ethitter.com/donate/
+Tags: seo, meta tags
+Requires at least: 4.4
+Tested up to: 4.5
+Stable tag: 0.4
+License: GPLv2 or later
+License URI: http://www.gnu.org/licenses/gpl-2.0.html
+
+Convert WordPress's query-based shortlinks to pretty permalinks that are cacheable.
+
+== Description ==
+
+WordPress 3.0 introduced a native shortlinks feature, which builds URLs using query strings. This plugin converts those URLs to ones using pretty permalinks, which makes for a nicer-looking URL and improves shortlinks' ability to be cached.
+
+Posts and pages are supported by default, while filters make it possible to support other post types.
+
+For example, http://example.com/?p=123 becomes http://example.com/p/123/.
+
+== Installation ==
+
+1. Upload the plugin files to the `/wp-content/plugins/eth-simple-shortlinks` directory, or install the plugin through the WordPress plugins screen directly.
+1. Activate the plugin through the 'Plugins' screen in WordPress.
+1. Flush your site's rewrite rules by visiting Settings > Permalinks.
+
+== Frequently Asked Questions ==
+
+= Can I customize a shortlink? =
+
+No, shortlinks use the posts' IDs, so aren't available for modification.
+
+== Changelog ==
+
+= 0.4 =
+* Initial release
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