diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -0,0 +1,14 @@
+hydrogen-multimap
+=================
+
+[![Build Status](https://travis-ci.org/scravy/hydrogen-multimap.svg?branch=master)](https://travis-ci.org/scravy/hydrogen-multimap)
+
+A very simple, basic implementation of a MultiMap (a map that associates
+a single key with multiple values).
+
+This MultiMap is basically a `Map k [v]` (multiple keys are backed by Lists).
+
++ Hackage: [`hackage.haskell.org/package/hydrogen-multimap`](http://hackage.haskell.org/package/hydrogen-multimap)
++ Haddock: [`hackage.haskell.org/package/hydrogen-multimap-0.1/docs/Hydrogen-MultiMap.html`](http://hackage.haskell.org/package/hydrogen-multimap-0.1/docs/Hydrogen-MultiMap.html)
+
+
diff --git a/hydrogen-multimap.cabal b/hydrogen-multimap.cabal
--- a/hydrogen-multimap.cabal
+++ b/hydrogen-multimap.cabal
@@ -1,5 +1,5 @@
 name:                 hydrogen-multimap
-version:              0.1
+version:              0.2
 homepage:             https://scravy.de/hydrogen-multimap/
 synopsis:             Hydrogen Multimap
 license:              MIT
@@ -17,8 +17,8 @@
 
 library
   exposed-modules:    Hydrogen.MultiMap
-  build-depends:      base ==4.7.*
-                      , containers ==0.5.*
+  build-depends:      base >=4.5 && <5
+                      , containers >=0.4
   hs-source-dirs:     src
   ghc-options:        -Wall
   default-language:   Haskell2010
@@ -29,9 +29,5 @@
                        , DeriveGeneric
                        , DeriveTraversable
                        , GADTs
-                       , LambdaCase
-                       , MultiWayIf
-                       , NoImplicitPrelude
                        , ScopedTypeVariables
-                       , TypeFamilies