Added JRuby on Heroku support:

  - Jemfile
  - Procfile
  - pom.xml
  - script/jruby
  - requisite changes for config/database.yml

Jemfile

@@ -0,0 +1,14 @@
+source 'http://rubygems.org'
+
+gem 'rails', '3.0.0'
+gem "will_paginate"
+gem "acts-as-taggable-on"
+gem "gchartrb"
+
+group :development, :test do
+	gem 'activerecord-jdbcsqlite3-adapter'
+end
+
+group :production do
+	gem 'activerecord-jdbcpostgresql-adapter'
+end

Procfile

@@ -0,0 +1,4 @@
+web:			sh script/jruby script/rails server -p $PORT
+console:	sh script/jruby script/rails console
+rake:			sh script/jruby -S rake
+jruby:		sh script/jruby

config/database.yml

@@ -1,7 +1,7 @@
 # SQLite version 3.x
-#   gem install sqlite3-ruby (not necessary on OS X Leopard)
+#   gem install sqlite3
 development:
-  adapter: sqlite3
+  adapter: jdbcsqlite3
   database: db/development.sqlite3
   pool: 5
   timeout: 5000
@@ -10,13 +10,14 @@ development:
 # re-generated from your development database when you run "rake".
 # Do not set this db to the same as development or production.
 test:
-  adapter: sqlite3
+  adapter: jdbcsqlite3
   database: db/test.sqlite3
   pool: 5
   timeout: 5000
 
 production:
-  adapter: sqlite3
-  database: db/production.sqlite3
+  adapter: jdbcpostgresql
+  url: <%= ENV["DATABASE_URL"].gsub(/postgres:\/\/(.*):(.*)@(.*)/) { "jdbc:postgresql://#{$3}?user=#{$1}&password=#{$2}" } rescue "unknown" %>
   pool: 5
   timeout: 5000
+

pom.xml

@@ -0,0 +1,53 @@
+<project>
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>au.com.mathew</groupId>
+  <artifactId>jruby-heroku</artifactId>
+	<version>1.0</version>
+	<name>webapp</name>
+	<packaging>jar</packaging>
+  <dependencies>
+		<dependency>
+				<groupId>org.jruby</groupId>
+				<artifactId>jruby-complete</artifactId>
+				<version>1.6.3</version>
+		</dependency>
+		<dependency>
+				<groupId>org.jruby.plugins</groupId>
+				<artifactId>jruby-rake-plugin</artifactId>
+				<version>1.6.3</version>
+		</dependency>
+  </dependencies>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.jruby.plugins</groupId>
+				<artifactId>jruby-rake-plugin</artifactId>
+				<version>1.6.3</version>
+				<executions>
+					<execution>
+						<id>install-bundler</id>
+						<phase>process-resources</phase>
+						<goals>
+							<goal>jruby</goal>
+						</goals>
+						<configuration>
+						 <args>-S gem install bundler --no-ri --no-rdoc --install-dir .gems</args>
+						</configuration>
+					</execution>
+					<execution>
+						<id>bundle-install</id>
+						<phase>process-resources</phase>
+						<goals>
+							<goal>jruby</goal>
+						</goals>
+						<configuration>
+							<args>
+								-e ENV['GEM_HOME']=File.join(Dir.pwd,'.gems');ENV['GEM_PATH']=File.join(Dir.pwd,'.gems');ENV['BUNDLE_GEMFILE']=File.join(Dir.pwd,'Jemfile');require'rubygems';require'bundler';require'bundler/cli';cli=Bundler::CLI.new;cli.install
+							</args>
+						</configuration>
+					</execution>
+				 </executions>
+			 </plugin>
+		</plugins>
+  </build>
+</project>

script/jruby

@@ -0,0 +1,115 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+#  Copyright 2001-2006 The Apache Software Foundation.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+# ----------------------------------------------------------------------------
+
+#   Copyright (c) 2001-2002 The Apache Software Foundation.  All rights
+#   reserved.
+
+APPDIR=`pwd`
+BASEDIR=`dirname $0`/..
+BASEDIR=`(cd "$BASEDIR"; pwd)`
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  Darwin*) darwin=true
+           if [ -z "$JAVA_VERSION" ] ; then
+             JAVA_VERSION="CurrentJDK"
+           else
+             echo "Using Java version: $JAVA_VERSION"
+           fi
+           if [ -z "$JAVA_HOME" ] ; then
+             JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/${JAVA_VERSION}/Home
+           fi
+           ;;
+esac
+
+if [ "$darwin" = "false" ] && [ $cygwin = "false" ]; then
+	APPDIR="$(dirname $(dirname $(readlink -fn "$0")))"
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# If a specific java binary isn't specified search for the standard 'java' binary
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD=`which java`
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly."
+  echo "  We cannot execute $JAVACMD"
+  exit 1
+fi
+
+if [ -z "$REPO" ]
+then
+  REPO="$BASEDIR"/repo
+fi
+
+CLASSPATH=$CLASSPATH_PREFIX:"$BASEDIR"/etc:"$REPO"/org/jruby/jruby-complete/1.6.3/jruby-complete-1.6.3.jar
+EXTRA_JVM_ARGUMENTS=""
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$CLASSPATH" ] && CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$HOME" ] && HOME=`cygpath --path --windows "$HOME"`
+  [ -n "$BASEDIR" ] && BASEDIR=`cygpath --path --windows "$BASEDIR"`
+  [ -n "$REPO" ] && REPO=`cygpath --path --windows "$REPO"`
+fi
+
+export GEM_HOME="$APPDIR"/.gems
+export GEM_PATH=$GEM_HOME
+export PATH="$GEM_PATH"/bin:$PATH
+export BUNDLE_GEMFILE="$APPDIR"/Jemfile
+
+# Test if Heroku's environment variables are set.
+# If they are, we're running on Heroku and should 
+# set our RAILS_ENV to production
+if [ -n "${DATABASE_URL}" ] && [ -n ${PORT} ] && [ "${APPDIR}" = "/app" ]; then
+	echo "Detected that we are running on Heroku. Setting RAILS_ENV=production"
+	export RAILS_ENV=production
+fi
+
+exec "$JAVACMD" $JAVA_OPTS \
+  $EXTRA_JVM_ARGUMENTS \
+  -classpath "$CLASSPATH" \
+  -Dbasedir="$BASEDIR" \
+  -Xmx256m \
+  -Xss2048k \
+  org.jruby.Main \
+  "$@"