Add Vagrant support

README.md

 # DOM Distiller
 
 DOM Distiller aims to provide a better reading experience by distilling the
 content of the page. This distilled content can then be used in a variety of
 ways.
 
 The current efforts that will be powered by DOM Distiller:
 - Reader mode: a mobile-friendly viewing mode for Chrome mobile
 
 ## How to use Reader mode on mobile Chrome
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 Before you build for the first time, you need to install the build dependencies.
 
 For all platforms, it is require to download and install
 [Google Chrome browser](https://www.google.com/chrome/browser/desktop/).
 
 ChromeDriver requires Google Chrome to be installed at a specific location
 (the default location for the platform). See
 [ChromeDriver documentation](https://code.google.com/p/selenium/wiki/ChromeDriver)
 for details.
 
-## Developing on Linux
+## Developing on Ubuntu/Debian
 
 Install the dependencies by entering the `dom-distiller` folder and running:
 ```bash
 sudo ./install-build-deps.sh
 ```
 
+Ubuntu 14.04 64-bit is recommended.
+
 ## Developing on Mac OS X
 
 - Install JDK 7 using either your organizations software management tool,
 or download it from
 [Oracle](http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html).
 - Install [Homebrew](http://brew.sh/).
 - Install `ant` and `python` using Homebrew:
 ```bash
 brew install ant python
 ```
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 - Install `selenium` using `pip`:
 ```
 pip install --user selenium
 ```
 
 For the rest of this guide, there are sometimes references to a tool called
 `xvfb` and specifically when running shell commands using `xvfb-run`. When you
 develop using a Mac OS X, you can remove that part of the command. For example
 `xvfb-run echo` would just become `echo`.
 
+## Developing with Vagrant
+
+This option could be useful if you want to develop on an unsupported system
+like Windows or Red Hat Linux. Even if you are on a supported system but
+would rather not touch the system too much, Vagrant is a viable alternative.
+
+The Vagrant VM is based on Ubuntu 14.04.
+
+- [Install Vagrant](http://www.vagrantup.com/downloads.html) on your system.
+  Version 1.7.2 or higher is recommended.
+- Launch the Vagrant VM instance
+```bash
+vagrant up
+```
+- SSH to the VM
+```bash
+vagrant ssh
+```
+
 ## Tools for contributing
 
 The DOM Distiller project uses the Chromium tools for collaboration. For code
 reviews, the
 [Chromium Rietveld code review tool](https://codereview.chromium.org/) is used
 and the set of tools found in `depot_tools` is also required.
 
 To get `depot_tools`, follow the guide at
 [Chrome infrastructure documentation for depot_tools](http://commondatastorage.googleapis.com/chrome-infra-docs/flat/depot_tools/docs/html/depot_tools_tutorial.html#_setting_up).
 
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 If you want you can copy some of these User-Agent aliases into normal bash
 aliases for easy access later. For example, Nexus 4 would be:
 ```bash
 --user-agent="Mozilla/5.0 (Linux; Android 4.2.1; en-us; Nexus 4 Build/JOP40D) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.166 Mobile Safari/535.19"
 ```
 
 Steps 1-3 in the guide above can typically be done in a stable version of
 Chrome, whereas the rest of the steps is typically done in your own build of
 Chrome (hence the "(Re)" in step 4). Besides speed, this also facilitates
 side-by-side comparison.