First pass at a readme

See #1

readme.txt

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+=== Rewrite Rules Inspector ===
+Contributors: danielbachhuber, automattic
+Tags: rewrite rules, tools
+Tested up to: 3.3.2
+Requires at least: 3.1
+Stable tag: 0.0
+
+Straightforward WordPress admin tool for inspecting your rewrite rules
+
+== Description ==
+
+A straightforward WordPress admin tool for inspecting your rewrite rules. View a listing of all your rewrite rules, see which rewrite rules match a given URL (and the priorites they match in), or filter to different sources of rewrite rules. Perform a soft flush of your rewrite rules to regenerate them.
+
+Originally developed for [WordPress.com VIP](http://vip.wordpress.com/)-hosted clients, we thought it would be nice to make available to those working in other environments. Feel free to [fork the plugin in Github](https://github.com/Automattic/Rewrite-Rules-Inspector/); pull requests are always welcome. Alternatively, hit us with feedback, questions, bug reports, and feature requests in the forums.
+
+== Changelog == 
+
+= 0.1 (May 9, 2012) =
+* Initial public release
+* View a listing of all your rewrite rules
+* See which rewrite rules match a given URL (and the priorites they match in)
+* Filter to different sources of rewrite rules
+* Error message appears if rewrite rules are missing in the database