Added missing source highlighting tags

Author: Thanix

book/01-introduction/sections/installing.asc

@@ -15,10 +15,12 @@ This book was written using Git version *2.0.0*. Though most of the commands we
 If you want to install Git on Linux via a binary installer, you can generally do so through the basic package-management tool that comes with your distribution.
 If you're on Fedora for example, you can use yum:
 
+[source,console]
   $ sudo yum install git
 
 If you're on a Debian-based distribution like Ubuntu, try apt-get:
 
+[source,console]
   $ sudo apt-get install git
 
 For more options, there are instructions for installing on several different Unix flavors on the Git website, at http://git-scm.com/download/linux[].
@@ -63,16 +65,16 @@ The binary installers tend to be a bit behind, though as Git has matured in rece
 If you do want to install Git from source, you need to have the following libraries that Git depends on: curl, zlib, openssl, expat, and libiconv.
 For example, if you're on a system that has yum (such as Fedora) or apt-get (such as a Debian based system), you can use one of these commands to install the minimal dependencies for compiling and installing the Git binaries:
 
+[source,console]
   $ sudo yum install curl-devel expat-devel gettext-devel \
     openssl-devel zlib-devel
-
   $ sudo apt-get install libcurl4-gnutls-dev libexpat1-dev gettext \
     libz-dev libssl-dev
 
 In order to be able to add the documentation in various formats (doc, html, info), these additional dependencies are required:
 
+[source,console]
   $ sudo yum install asciidoc xmlto docbook2x
-
   $ sudo apt-get install asciidoc xmlto docbook2x
 
 When you have all the necessary dependencies, you can go ahead and grab the latest tagged release tarball from several places.
@@ -81,6 +83,7 @@ It's generally a little clearer what the latest version is on the GitHub page, b
 
 Then, compile and install:
 
+[source,console]
   $ tar -zxf git-2.0.0.tar.gz
   $ cd git-2.0.0
   $ make configure
@@ -90,4 +93,5 @@ Then, compile and install:
 
 After this is done, you can also get Git via Git itself for updates:
 
+[source,console]
   $ git clone git://git.kernel.org/pub/scm/git/git.git