Added "$" before command lines

CONTRIBUTING.rst

@@ -6,43 +6,41 @@ so do not hesitate!
 
 Contributions can be made in the form of feature requests, bug reports and feedback.
 
+
 First Time
 ----------
 
 - Download and install the `latest version of git`_.
 - Configure git with your `username`_ and `email`_::
 
-        git config --global user.name 'your name'
-        git config --global user.email 'your email'
+    $ git config --global user.name 'your name'
+    $ git config --global user.email 'your email'
 
 - Make sure you have a `GitHub account`_.
 - Fork Bottery to your GitHub account by clicking the `Fork`_ button.
 - `Clone`_ your GitHub fork locally::
 
-        git clone https://github.com/{username}/bottery/
-        cd bottery
+    $ git clone https://github.com/{username}/bottery/
+    $ cd bottery
 
 - Add the main repository as a remote to update later::
 
-        git remote add rougeth https://github.com/rougeth/bottery
-        git fetch rougeth
-
-- Create a virtualenv::
-
-        python3 -m venv env
-        . env/bin/activate
-        # or "env\Scripts\activate" on Windows
+    $ git remote add rougeth https://github.com/rougeth/bottery
+    $ git fetch rougeth
 
+- Create a `virtualenv`_.
 - Install Bottery in editable mode with development dependencies::
 
-        pip install -e ".[dev]"
+    $ pip install -e ".[dev]"
 
 .. _GitHub account: https://github.com/join
 .. _latest version of git: https://git-scm.com/downloads
 .. _username: https://help.github.com/articles/setting-your-username-in-git/
 .. _email: https://help.github.com/articles/setting-your-email-in-git/
 .. _Fork: https://github.com/rougeth/bottery#fork-destination-box
 .. _Clone: https://help.github.com/articles/fork-a-repo/#step-2-create-a-local-clone-of-your-fork
+.. _virtualenv: http://docs.bottery.io/en/latest/installation.html#virtualenv
+
 
 Development
 -----------