link to cqt.html from README

Signed-off-by: Daniel Hardman <daniel.hardman@gmail.com>

README.md

@@ -1,5 +1,9 @@
 # CQT
-This is a spec for a simple but powerful algorithm for canonicalizing chunks of text that flow not via files but via chat, copy/paste, or other non-file-oriented channels (social media, SMS, email, etc.). Note the reference implementation in python [cqt.py](cqt.py), and ports in javascript [cqt.js](cqt.js), java [Cqt.java](Cqt.java), go [cqt.go](cqt.go), and rust [cqt.rs](cqt.rs). Note also the unit tests in [test_cqt.py](test_cqt.py).
+This is a spec for a simple but powerful algorithm for canonicalizing chunks of text that flow not via files but via chat, copy/paste, or other non-file-oriented channels (social media, SMS, email, etc.).
+
+An interactive form that lets you run the algorithm on arbitrary text is located [here](cqt.html).
+
+Reference implementations in python [cqt.py](cqt.py), and ports in javascript [cqt.js](cqt.js), java [Cqt.java](Cqt.java), go [cqt.go](cqt.go), and rust [cqt.rs](cqt.rs). Note also the unit tests in [test_cqt.py](test_cqt.py).
 
 ### Purpose
 Cryptographic hashes and signatures are usually applied to files or data structures. However, a very important category of communication is not file-oriented. In our modern world, lots of text moves across system boundaries using mechanisms that are prone to reformatting and error due to their inherent fuzziness. We see a post on social media on our phones, copy it, and paste it into a text to a friend. She emails it to a journalist acquaintance, who moves it into a word processor that is configured to use a different locale with different autocorrect and punctuation settings. Eventually, a student cites the journalist in a paper they're writing. Somewhere along the way, whitespace is deleted, capitalization or spelling is altered, the codepage changes, smart quotes turn into dumb quotes or two hyphens become an em dash.