docs: addding install documents

docs/install.rst

+Installation of a storage machine
+=================================
+
+.. highlight:: bash
+
+Setting up required software
+----------------------------
+Update the package lists, and install the required system software::
+
+ $ sudo apt-get update
+ $ sudo apt-get install --yes qemu-utils virtualenvwrapper git \
+     python-pip
+
+Setting up NFS share
+--------------------
+Install the nfs-server package:: 
+ 
+ $ sudo apt-get install nfs-server
+
+Create the datastore directory::
+
+ $ mkdir /datastore
+ $ sudo chown cloud:cloud /datastore
+
+Edit NFS exports::
+
+ $ vim /etc/exports
+
+Restert the nfs service::
+ $ sudo /etc/init.d/nfs-kernel-server restart
+
+Setting up Storage itself
+-------------------------
+Clone the git repository::
+
+ $ git clone git@git.ik.bme.hu:circle/storagedriver.git storagedriver
+
+Set up *virtualenvwrapper* and the *virtual Python environment* for the
+project::
+
+  $ source /etc/bash_completion.d/virtualenvwrapper
+  $ mkvirtualenv storage
+
+Set up default Storage configuration and activate the virtual environment::
+
+  $ cat >>/home/cloud/.virtualenvs/storage/bin/postactivate <<END
+  export AMQP_URI='amqp://cloud:password@host:5672/circle'
+  END
+  $ workon circle
+  $ cd ~/storagedriver
+
+Install the required Python libraries to the virtual environment::
+
+  $ pip install -r requirements/local.txt
+
+Copy the upstart scripts for celery services::
+
+  $ sudo cp miscellaneous/storagecelery.conf /etc/init/
+
+Start celery daemons::
+
+  $ sudo start storagecelery