diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,13 @@
 # Revision history for aeson-combinators
 
-## 0.0.0.1 -- 2020-03-01
+## 0.0.2.1 -- 2020-03-08
+* Add README to extra source files
+
+## 0.0.2.0 -- 2020-03-08
+
+* GHCJS compatibility
+
+## 0.0.1.1 -- 2020-03-01
 
 * Fixes and improvements in documentation
 * Add source-repository to cabal file
diff --git a/README.md b/README.md
new file mode 100644
--- /dev/null
+++ b/README.md
@@ -0,0 +1,32 @@
+# Aeson Combinators
+
+[![Build Status](https://travis-ci.org/turboMaCk/aeson-combinators.svg?branch=master)](https://travis-ci.org/turboMaCk/aeson-combinators)
+
+This library defines [**low overhead**](#internals) value space `Decoder`
+on top of Aeson's Parser for combinator style decoding.
+
+This library is compatible with GHC **7.6** and later as well as recent versions of **GHCJS**.
+
+__Encoding to JSON is currently not supported but might be added in the future version.__
+
+I wrote a [blob post](https://turbomack.github.io/posts/2020-02-21-value-space-decoding-for-aeson.html)
+describing what this library attempts to solve.
+
+## Internals
+
+This library introduces as low overhead over Aeson API as possible.
+`Decoder a` type is a function `Value -> Parser a` same as `fromJSON`
+function of `FromJSON` class. This means there should be near zero overhead.
+Aeson types and functions are reused where possible.
+
+## TODO
+
+- [x] Documentation
+- [x] Support for more GHC versions
+- [x] Default decoders for Containers
+- [ ] Encoding API
+
+## License
+
+(c) 2020 Marek Fajkus
+BSD-3-Clause
diff --git a/aeson-combinators.cabal b/aeson-combinators.cabal
--- a/aeson-combinators.cabal
+++ b/aeson-combinators.cabal
@@ -1,6 +1,6 @@
 cabal-version:       >=1.10
 name:                aeson-combinators
-version:             0.0.2.0
+version:             0.0.2.1
 synopsis:            Aeson combinators for dead simple JSON decoding
 description:
     This library defines low overhead value space `Decoder`
@@ -15,7 +15,8 @@
 stability:           experimental
 category:            Text, Web, JSON
 build-type:          Simple
-extra-source-files:  CHANGELOG.md
+extra-source-files:  README.md
+                   , CHANGELOG.md
 homepage:            https://github.com/turboMaCk/aeson-combinators
 tested-with:         GHC == 7.10.3
                    , GHC == 7.8.4