diff --git a/README.md b/README.md
old mode 100644
new mode 100755
index 5e17e670..ef907cfd
--- a/README.md
+++ b/README.md
@@ -1,15 +1,52 @@
-Heroku buildpack: PhantomJS
-=======================
+# Heroku buildpack: CasperJS
 
-This is a [Heroku buildpack](http://devcenter.heroku.com/articles/buildpacks) of CasperJS(http://casperjs.org).
+This is a [Heroku buildpack](http://devcenter.heroku.com/articles/buildpacks) of [CasperJS](http://casperjs.org) / [PhantomJS](http://phantomjs.org/).
 
-Usage
------
+**Note**: this buildpack only installs the `phantomjs` and `casperjs` binaries.
+
+**Note2**: this buildpack checks out the latest CasperJS on master branch.  
+If you need a specific version, please fork and change the git URL or add a `git co <tag>` [here](bin/compile#L32).
+
+## Usage
 
 Example usage:
 
-    $ heroku create --stack cedar --buildpack http://github.com/misza222/heroku-buildpack-casperjs.git
+```bash
+$ heroku create --stack cedar --buildpack https://github.com/leesei/heroku-buildpack-casperjs.git
+
+$ git push heroku master
+```
+
+You can now login to the herokuapp and execute `phantomjs` and `casperjs`:
+
+```bash
+$ heroku run bash
+Running `bash` attached to terminal... up, run.2587
+Add phantomjs/casperjs paths ...
+
+$ phantomjs --version
+1.9.2
+
+$ casperjs --version
+1.1.0-DEV
+```
+
+---
+
+Alternately, you can cascade with other buildpacks with [buildpack-multi](https://github.com/ddollar/heroku-buildpack-multi). 
+`buildpack-casperjs` plays well with cascading since this buildpack uses `profile.d/casperjs.sh` to add to PATH.
+
+```bash
+$ heroku create --stack cedar --buildpack https://github.com/ddollar/heroku-buildpack-multi.git
+
+$ echo https://github.com/leesei/heroku-buildpack-casperjs.git > .buildpacks
+
+# echo [other buildpack] >> .buildpacks
+# `git add` your files
 
-    $ git push heroku master
+$ git push heroku master
+```
 
+Example: [leesei/heroku-casper-node](https://github.com/leesei/heroku-casper-node)
 
+You can replace Node with other language of your choice.
diff --git a/bin/casperjs.sh b/bin/casperjs.sh
new file mode 100755
index 00000000..0bd55621
--- /dev/null
+++ b/bin/casperjs.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+echo "Add phantomjs/casperjs paths ..."
+PATH="${PATH}:/app/vendor/phantomjs/bin:/app/vendor/casperjs/bin"
+LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/app/vendor/phantomjs/lib"
+
diff --git a/bin/compile b/bin/compile
index 91295844..8efa527b 100755
--- a/bin/compile
+++ b/bin/compile
@@ -2,29 +2,38 @@
 
 set -e
 
+# dirs
+BIN_DIR=$(cd $(dirname $0); pwd) # absolute path
 BUILD_DIR=$1
 CACHE_DIR=$2
 
 # config
-VERSION="1.8.1"
-S3_BUCKET="stomita-buildpack-phantomjs"
+VERSION="1.9.8"
 
-# s3 packages
-FILE_NAME="buildpack-phantomjs-${VERSION}.tar.gz"
-BUILDPACK_PHANTOMJS_PACKAGE="http://${S3_BUCKET}.s3.amazonaws.com/${FILE_NAME}"
+# Buildpack URL
+ARCHIVE_NAME=phantomjs-${VERSION}-linux-x86_64
+FILE_NAME=${ARCHIVE_NAME}.tar.bz2
+# BUILDPACK_PHANTOMJS_PACKAGE=https://phantomjs.googlecode.com/files/${FILE_NAME}
+BUILDPACK_PHANTOMJS_PACKAGE=http://bitbucket.org/ariya/phantomjs/downloads/${FILE_NAME}
 
 mkdir -p $CACHE_DIR
 if ! [ -e $CACHE_DIR/$FILE_NAME ]; then
-  echo "-----> Fetching PhantomJS buildpack binaries"
-  curl $BUILDPACK_PHANTOMJS_PACKAGE -s -o $CACHE_DIR/$FILE_NAME
+  echo "-----> Fetching PhantomJS ${VERSION} binaries at ${BUILDPACK_PHANTOMJS_PACKAGE}"
+  curl -L $BUILDPACK_PHANTOMJS_PACKAGE -s -o $CACHE_DIR/$FILE_NAME
+  echo "-----> Stored in ${CACHE_DIR}/${FILE_NAME}"
 fi
 
-echo "-----> Extracting PhantomJS binaries" 
-mkdir -p $BUILD_DIR/vendor/phantomjs
-tar zxf $CACHE_DIR/$FILE_NAME -C $BUILD_DIR/vendor/phantomjs
+echo "-----> Extracting PhantomJS ${VERSION} binaries to ${BUILD_DIR}/vendor/phantomjs"
+mkdir -p $CACHE_DIR/$ARCHIVE_NAME
+mkdir -p $BUILD_DIR/vendor
+tar -xjf $CACHE_DIR/$FILE_NAME -C $CACHE_DIR
+mv $CACHE_DIR/$ARCHIVE_NAME $BUILD_DIR/vendor/phantomjs
 
-
-echo "-----> Cloning casperjs"
-
-cd $BUILD_DIR/vendor
+echo "-----> Cloning CasperJS"
+cd ${BUILD_DIR}/vendor
 git clone git://github.com/n1k0/casperjs.git
+
+echo "-----> Installing .profile.d/casperjs.sh"
+cd ${BUILD_DIR}
+mkdir -p .profile.d
+cp ${BIN_DIR}/casperjs.sh .profile.d/
diff --git a/bin/release b/bin/release
index 3c27b4ae..092d8710 100755
--- a/bin/release
+++ b/bin/release
@@ -3,7 +3,7 @@
 cat << EOF
 ---
 config_vars:
-  PATH: "/usr/local/bin:/usr/bin:/bin:/app/vendor/phantomjs/bin"
+  PATH: "/usr/local/bin:/usr/bin:/bin:/app/vendor/phantomjs/bin:/app/vendor/casperjs/bin"
   LD_LIBRARY_PATH: "/usr/local/lib:/usr/lib:/lib:/app/vendor/phantomjs/lib"
 default_process_types:
   console: "vendor/phantomjs/bin/phantomjs"