Updates in Getting Started manual chapter (fixes #794)

manual/docs/en/getting-started/installation.txt

-The installation of doctrine is very easy. Just get the latest revision of
-Doctrine from http://svn.phpdoctrine.org/trunk. 
+There are currently two different methods to install Doctrine.
 
-You need a SVN (Subversion) client for downloading Doctrine.
+* SVN (subversion)
+* SVN externals
+
+It is recommended to download Doctrine via SVN (subversion), because in this case updating is easy.
+If your project is already under version control with SVN, you should choose SVN externals.
+
+
++++ SVN 
+
+The installation of doctrine via SVN is very easy. Just get the latest revision of Doctrine from http://svn.phpdoctrine.org/trunk.
 
 In order to check out Doctrine in the current directory using the **svn** command line tool use the following code:
 
@@ -9,9 +17,37 @@ In order to check out Doctrine in the current directory using the **svn** comman
 svn co http://svn.phpdoctrine.org/trunk .
 </code>
 
-If you do not have a SVN client, chose one from the list below. Find the
-**Checkout** option and enter http://svn.phpdoctrine.org/trunk in the **path** or **repository url** parameter. There is no need for a username or password to check out Doctrine. 
+If you do not have a SVN client, chose one from the list below. Find the **Checkout** option and enter svn.phpdoctrine.org/trunk in the **path** or **repository url** parameter. There is no need for a username or password to check out Doctrine. 
 
 * [http://tortoisesvn.tigris.org/ TortoiseSVN] a Windows application that  integrates into Windows Explorer
 * [http://www.apple.com/downloads/macosx/development_tools/svnx.html svnx] a  Mac OS X GUI svn application 
 * Eclipse has SVN integration through the [http://subclipse.tigris.org/ subeclipse] plugin
+
+You can update to the latest version with
+
+<code type="bash">
+svn update
+</code>
+
+in your doctrine directory.
+
+
++++ SVN externals
+
+If your project is under version control with SVN, you should set up doctrine via svn externals. You can do this with the **svn** command line tool:
+
+<code type="bash"> 
+svn pe svn:externals /path/to/project
+</code>
+
+You have to put the following line in the editor and save the changes.
+
+<code>
+doctrine http://svn.phpdoctrine.org/trunk
+</code>
+
+Afterwards you can download doctrine with
+
+<code>
+svn update
+</code>

manual/docs/en/getting-started/starting-new-project.txt

@@ -25,7 +25,7 @@ For exporting the user class into database we need a simple build script:
 
 <code type="php">
 //require the base Doctrine class
-require_once('lib/Doctrine.php');
+require_once('path-to-doctrine/lib/Doctrine.php');
 
 //register the autoloader
 spl_autoload_register(array('Doctrine', 'autoload'));

manual/docs/en/getting-started/working-with-existing-databases.txt

@@ -25,7 +25,7 @@ CREATE TABLE file (
 Now we would like to convert it into Doctrine record class. It can be achieved easily with the following code snippet:
 
 <code type="php">
-require_once('lib/Doctrine.php');
+require_once('path-to-doctrine/lib/Doctrine.php');
 
 spl_autoload_register(array('Doctrine', 'autoload'));
 Doctrine_Manager::connection('mysql://root:dc34@localhost/test');