[DOCUMENTATION] Update tests README

tests/README.markdown

@@ -1,25 +1,24 @@
 # Running the Doctrine 2 Testsuite
 
-## Setting up a PHPUnit Configuration XML
+To execute the Doctrine2 testsuite, you just need to execute this simple steps:
 
-..
+ * Clone the project from GitHub
+ * Enter the Doctrine2 folder
+ * Install the dependencies
+ * Execute the tests
+
+ All this is (normally) done with:
 
-## Testing Lock-Support
+```
+git clone [email protected]:doctrine/doctrine2.git
+cd doctrine2
+composer install
+./vendor/bin/phpunit
+```
 
-The Lock support in Doctrine 2 is tested using Gearman, which allows to run concurrent tasks in parallel.
-Install Gearman with PHP as follows:
+## Pre-requisites
+Doctrine2 works on many database vendors; the tests can detect the presence of installed vendors, but you need at least one of those; the easier to install is SQLite.
 
-1. Go to http://www.gearman.org and download the latest Gearman Server
-2. Compile it and then call ldconfig
-3. Start it up "gearmand -vvvv"
-4. Install pecl/gearman by calling "gearman-beta"
+If you're using a Debian-derivative Linux distribution, you can install SQLite with:
 
-You can then go into tests/ and start up two workers:
-
-    php Doctrine/Tests/ORM/Functional/Locking/LockAgentWorker.php
-
-Then run the locking test-suite:
-
-    phpunit --configuration <myconfig.xml> Doctrine/Tests/ORM/Functional/Locking/GearmanLockTest.php
-
-This can run considerable time, because it is using sleep() to test for the timing ranges of locks.
+    sudo apt-get install sqlite