diff --git a/README.md b/README.md
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+Heroku Buildpack: Optipng
+=======================
+
+This is a [Heroku buildpack](http://devcenter.heroku.com/articles/buildpacks) for using [optipng](http://optipng.sourceforge.net/) in your application.  
+
+It is designed to be used with [heroku-buildpack-multi](https://github.com/ddollar/heroku-buildpack-multi) to combine it with the appropriate real buildpack for your app.
+
+This is based on http://github.com/jayzes/heroku-buildpack-ffmpeg, which was in turn based on https://github.com/shunjikonishi/heroku-buildpack-ffmpeg
+
+Usage
+-----
+Add a `.buildpacks` file to the root of your repo that contains this buildpack URL and your real buildpack URL:
+
+    https://github.com/jayzes/heroku-buildpack-optipng
+    https://github.com/heroku/heroku-buildpack-ruby
+
+Then create an application using the multi buildpack:
+
+    $ heroku create --buildpack https://github.com/ddollar/heroku-buildpack-multi
+
+or configure an existing application:
+
+    $ heroku config BUILDPACK_URL=https://github.com/ddollar/heroku-buildpack-multi
+
+You can verify that everything is properly installed by running the following command:
+
+    $ heroku run "optipng -v"
+
diff --git a/bin/compile b/bin/compile
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+#!/bin/sh
+
+indent() {
+  sed -u 's/^/       /'
+}
+
+echo "-----> Installing optipng"
+BUILD_DIR=$1
+VENDOR_DIR="vendor"
+OPTIPNG_DOWNLOAD_URL="https://github.com/jayzes/heroku-buildpack-optipng/releases/download/v0.7.4/optipng"
+
+echo "OPTIPNG_DOWNLOAD_URL = " $PNGQUANT_DOWNLOAD_URL | indent
+
+cd $BUILD_DIR
+mkdir -p $VENDOR_DIR/optipng/bin
+cd $VENDOR_DIR
+curl -L --silent -o optipng/bin/optipng $OPTIPNG_DOWNLOAD_URL
+chmod +x optipng/bin/optipng
+
+echo "exporting PATH" | indent
+PROFILE_PATH="$BUILD_DIR/.profile.d/optipng"
+mkdir -p $(dirname $PROFILE_PATH)
+echo 'export PATH="$PATH:vendor/optipng/bin"' >> $PROFILE_PATH
diff --git a/bin/detect b/bin/detect
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+++ b/bin/detect
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+#!/bin/sh
+
+# this pack is valid for all apps
+echo "optipng"
+exit 0
diff --git a/bin/release b/bin/release
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+++ b/bin/release
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+#!/bin/sh
+echo "--- {}"