diff --git a/README.md b/README.md
new file mode 100644
index 0000000..52e59ac
--- /dev/null
+++ b/README.md
@@ -0,0 +1,19 @@
+# async-backup
+<a href="https://liberapay.com/contrapunctus/donate"><img alt="Donate using Liberapay" src="https://img.shields.io/liberapay/receives/contrapunctus.svg?logo=liberapay"></a>
+
+Emacs has a built-in backup system, but it does not backup on each
+save. It can be made to, but that makes saving really slow (and the
+UI unresponsive), especially for large files.
+
+Fortunately, Emacs has asynchronous processes.
+
+To enable for all files -
+  `(add-hook 'after-save-hook #'async-backup)`
+  
+To enable for a specific file -
+  `M-x add-file-local-variable RET eval RET (add-hook 'after-save-hook #'async-backup nil t) RET`
+
+# License
+Chronometrist is released under your choice of [Unlicense](https://unlicense.org/) or the [WTFPL](http://www.wtfpl.net/).
+
+(See files [UNLICENSE](UNLICENSE) and [WTFPL](WTFPL)).
diff --git a/UNLICENSE b/UNLICENSE
new file mode 100644
index 0000000..fdddb29
--- /dev/null
+++ b/UNLICENSE
@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <https://unlicense.org>
diff --git a/WTFPL b/WTFPL
new file mode 100644
index 0000000..c6c7def
--- /dev/null
+++ b/WTFPL
@@ -0,0 +1,13 @@
+        DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.
diff --git a/async-backup.el b/async-backup.el
index 222e1bd..e1a2c66 100644
--- a/async-backup.el
+++ b/async-backup.el
@@ -28,6 +28,8 @@
 ;;   `(add-hook 'after-save-hook #'async-backup)'
 ;; To enable for a specific file -
 ;;   `M-x add-file-local-variable RET eval RET (add-hook 'after-save-hook #'async-backup nil t) RET'
+;;
+;; See the full documentation at <https://tildegit.org/contrapunctus/async-backup>
 
 ;;; Code:
 (require 'cl-lib)