diff --git a/README.md b/README.md
new file mode 100644
--- /dev/null
+++ b/README.md
@@ -0,0 +1,40 @@
+# timelens
+
+This package contains `lens` lenses for the `time` package.
+
+In theory, you can write lenses without depending on any lens library.
+However, that is more work, so this package simply depends on `lens`.
+`lens` is a heavyweight library, but it has nice things like `Iso`s,
+which are used in this package, so I will stick with `lens` rather
+than using a more lightweight lens library like `microlens`.
+
+You should also look at the `lens-datetime` package:
+
+https://www.stackage.org/package/lens-datetime
+
+The main difference between `lens-datetime` and this package is that
+this package does not attempt to do anything fancy.  For example,
+`lens-datetime` has typeclasses to allow you to access types of
+different values by using functions of the same name.  `timelens` does
+not attempt anything like this.
+
+Some functions or values in `timelens` do not obey the lens laws;
+everything in `timelens` obeys the lens laws.  `timelens` does not
+attempt to do any sort of conversions or operations on dates or times.
+
+`lens-datetime` does not cover all types in the `time` package, while
+`timelens` does.
+
+In short, `lens-datetime` is more ambitious, while `timelens` is
+pretty much what you would get if the `time` library had included the
+`Control.Lens.makeLenses` Template Haskell splices.
+
+## License
+
+This package is released under the BSD3 license. Please see the LICENSE file.
+
+## Building this project
+
+If you are viewing the source code repository, a `.cabal` file might
+not be included.  Please see the README.md in the main project directory
+for details on how to generate the `.cabal` file.
diff --git a/timelens.cabal b/timelens.cabal
--- a/timelens.cabal
+++ b/timelens.cabal
@@ -3,11 +3,11 @@
 -- http://www.github.com/massysett/cartel
 --
 -- Script name used to generate: gen-timelens-cabal
--- Generated on: 2016-06-30 08:45:15.579937 EDT
+-- Generated on: 2016-06-30 08:56:19.024586 EDT
 -- Cartel library version: 0.16.0.0
 
 name: timelens
-version: 0.2.0.0
+version: 0.2.0.2
 cabal-version: >= 1.10
 license: BSD3
 license-file: LICENSE
@@ -23,6 +23,8 @@
   These are lenses for the time package.  Please see the README.md
   for more information.
 category: Development
+extra-source-files:
+  README.md
 
 Library
   build-depends: