missed steps in readme and frequently used port for application

[Peter Lomakin]

README.md missed some steps for manual deployment and also we lost instruction for CentOS installation.
We use 8000 port as a default for our app - need to change that, to make install it near fuel and other web applications.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/59370

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/59370
Committed: http://github.com/stackforge/rubick/commit/a9b8de3766bf36c72a64f5da3e25290d3ef64642
Submitter: Jenkins
Branch: master

commit a9b8de3766bf36c72a64f5da3e25290d3ef64642
Author: Peter Lomakin <email address hidden>
Date: Mon Dec 2 17:32:58 2013 +0400

    Update readme description

    Add installation manual for CentOS and fix
    steps for application deploying and running under Ubuntu.

    Changed default port for webui from 8000 to 8008 to run it near other
    web applications.

    Removed old Procfile for production.

    Change-Id: I1472bf2e726078b3d12a7b978cb10ebe8cb8cc09
    Closes-Bug: #1256920

[Peter Lomakin (plomakin)]

Proposing slightly edit installation part in order to users can install by copy-paste. Switch packages installation on the first place and add "git", then perform git clone:
For Ubuntu:
$ sudo apt-get install git build-essential mongodb-server redis-server python-pip
$ git clone https://github.com/stackforge/rubick && cd rubick
$ sudo pip install -r requirements.txt
$ honcho start
For CentOS:
$ sudo yum install git build-essential mongodb-server redis-server python-pip
$ git clone https://github.com/stackforge/rubick && cd rubick
$ sudo pip install -r requirements.txt
$ honcho start