Updated to 0.90.2. Yet to test.

es.sh

cd ~
sudo apt-get update
sudo apt-get install openjdk-7-jre-headless -y


### Check http://www.elasticsearch.org/download/ for latest version of ElasticSearch and replace wget link below

## NEW WAY / EASY WAY
#wget https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-0.90.2.deb
#sudo dpkg -i elasticsearch-0.90.2.deb
#sudo service elasticsearch start

# OLD WAY / HARD WAY
wget https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-0.90.2.tar.gz
tar -xf elasticsearch-0.90.2.tar.gz
rm elasticsearch-0.90.2.tar.gz
#rm elasticsearch-0.90.2.deb
sudo mv elasticsearch-* elasticsearch
sudo mv elasticsearch /usr/local/share

curl -L http://github.com/elasticsearch/elasticsearch-servicewrapper/tarball/master | tar -xz
sudo mv *servicewrapper*/service /usr/local/share/elasticsearch/bin/
rm -Rf *servicewrapper*
sudo /usr/local/share/elasticsearch/bin/service/elasticsearch install
sudo ln -s `readlink -f /usr/local/share/elasticsearch/bin/service/elasticsearch` /usr/local/bin/rcelasticsearch

sudo service elasticsearch start
#curl http://localhost:9200

Worked for me. I didn't install JDK. Note that you need to set the memory settings of Elastic Search in order to get it running properly or the service will not start.