diff --git a/README.md b/README.md
new file mode 100644
--- /dev/null
+++ b/README.md
@@ -0,0 +1,110 @@
+# haven
+## Recursively retrieve maven dependencies
+
+A haskell project that uses Maven's `dependency:tree` command to get a
+list of Maven dependencies. The primary output format is a list of
+[nix sets](http://nixos.org/nix/manual/#idm140737318096432) describing
+the maven packages. Maven's local repo is redirected to a tmp
+directory, so haven won't pollute your home directory.
+
+`maven` is required in order to run `haven`. The provided `shell.nix` 
+includes maven.
+
+### Example
+
+#### `pom.xml`
+
+```xml
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>com.dummy</groupId>
+  <artifactId>dummy</artifactId>
+  <version>1.0-SNAPSHOT</version>
+
+  <repositories>
+    <repository>
+      <id>maven</id>
+      <url>https://repo1.maven.org/maven2/</url>
+    </repository>
+    <repository>
+      <id>central</id>
+      <url>https://central.maven.org/maven2/</url>
+    </repository>
+    <repository>
+      <id>jcenter</id>
+      <url>https://jcenter.bintray.com/</url>
+    </repository>
+  </repositories>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.android.tools.build</groupId>
+      <artifactId>gradle</artifactId>
+      <version>2.3.1</version>
+    </dependency>
+    <dependency>
+      <groupId>com.google.gms</groupId>
+      <artifactId>google-services</artifactId>
+      <version>3.0.0</version>
+    </dependency>
+    <dependency>
+      <groupId>com.firebase</groupId>
+      <artifactId>firebase-jobdispatcher</artifactId>
+      <version>0.5.2</version>
+      <type>aar</type>
+      <exclusions>
+        <exclusion>
+          <groupId>com.android.support</groupId>
+          <artifactId>support-v4</artifactId>
+        </exclusion>
+      </exclusions>
+    </dependency>
+  </dependencies>
+</project>
+```
+
+#### Output
+
+```bash
+$ haven ./pom.xml
+... # Maven logs on stderr
+
+[
+  { artifactId = "gradle";
+    groupId = "com.android.tools.build";
+    version = "2.3.1";
+    repo = "https://jcenter.bintray.com";
+    jarSha256 = "c621e827cf3b1dd6607d6c3f2dacdbea81cc4000ef3d7b91d7e967f368b9d9c3";
+    pomSha256 = "9a240dcae4b27de87af1cfb7164cb2097785e32dc1bca39cdaa1f5504c50cae4";
+    aarSha256 = null; }
+
+  { artifactId = "gradle-core";
+    groupId = "com.android.tools.build";
+    version = "2.3.1";
+    repo = "https://jcenter.bintray.com";
+    jarSha256 = "6584bba738af0e1435521258ad20352e4f22e1ad9d6e3e10b566f9e316674804";
+    pomSha256 = "d393f858b613952f08d01ba6515a91f910be30768d6e05729ac254d632c87e3b";
+    aarSha256 = null; }
+
+  { artifactId = "builder";
+    groupId = "com.android.tools.build";
+    version = "2.3.1";
+    repo = "https://jcenter.bintray.com";
+    jarSha256 = "b1a948c366e98061d840f2333d1467fbca7a53ff6d81f7a46cd15aea0a1272cc";
+    pomSha256 = "883026a359536e2d05a01cb8cea06e076bb013eccf1fb0ce35d4d96beda60521";
+    aarSha256 = null; }
+
+  { artifactId = "builder-model";
+    groupId = "com.android.tools.build";
+    version = "2.3.1";
+    repo = "https://jcenter.bintray.com";
+    jarSha256 = "37ee6a2cbabc5ff9968dfbb58025aa53aaac9795d4d9a50f2a0883076e7398fb";
+    pomSha256 = "34245bc246fe93b3c3bf6f933a51efbb36d300e8fcee6cec4cee51653a1469b3";
+    aarSha256 = null; }
+
+...
+
+]
+```
diff --git a/haven.cabal b/haven.cabal
--- a/haven.cabal
+++ b/haven.cabal
@@ -2,17 +2,18 @@
 synopsis:            Recursively retrieve maven dependencies
 description:         A haskell project that retrieves maven package dependencies recursively given a starting set of packages. The primary output format is a list of nix sets describing the maven packages.
 category:            Java
-version:             0.2.0.0
+version:             0.2.0.1
 license:             BSD3
 license-file:        LICENSE
 author:              Ali Abrar, Will Fancher
 maintainer:          maintainer@obsidian.systems
 build-type:          Simple
 cabal-version:       >=1.10
+extra-source-files:  README.md
 
 executable haven
   main-is:             Main.hs
-  build-depends: base >=4.9 && <4.10
+  build-depends: base >=4.9 && <4.12
                , bytestring
                , containers
                , http-conduit