Added example for testsuite

CONTRIBUTING.md

@@ -0,0 +1,18 @@
+# Contributing guidelines
+
+These are guidelines for contributing to the PHPunit documentation. Before submitting a new issue or opening a new PR, please search to see if the same issue/PR already exists.
+
+
+## Submit an issue
+
+[Submit an Issue](https://github.com/sebastianbergmann/phpunit-documentation/issues) -- please specify the version number and a URL of the the problem.
+
+## Fixing an Issue
+
+The steps here may change in the future, but currently if you wish to contribute to the PHPunit documentation, follow the following steps:
+
+1. Fork the [PHPunit Repository](https://github.com/sebastianbergmann/phpunit-documentation/issues)
+2. Clone your fork to your local environment.
+3. The documentation files exist as XML files inside the `src/` directory, organized by version and locale, e.g. `src/5.2/en/`.  The last URL segment from [https://phpunit.de/manual/](https://phpunit.de/manual/) corresponds to the XML file basename, e.g. the `https://phpunit.de/manual/4.8/en/organizing-tests.html` page is generated by the `src/4.8/en/organizing-tests.xml` file.  When making an edit to an existing page, make the changes to all versions that apply.  For example, if you wish to edit the `organizing-tests.xml` file, you may need to make the change inside the `4.8`, `5.0`, `5.1`, and `5.2` directories.
+4. Commit and push your fixes to your fork.
+5. Open a pull request from your fork to the `sebastianbergmann/phpunit-documentation` repo.  Make sure you reference the relevant issue number.

src/4.8/en/organizing-tests.xml

@@ -121,13 +121,18 @@ OK (2 test, 2 assertions)</screen>
       <title>Composing a Test Suite Using XML Configuration</title>
       <programlisting><![CDATA[<phpunit bootstrap="src/autoload.php">
   <testsuites>
-    <testsuite name="money">
+    <testsuite name="prod">
       <directory>tests</directory>
     </testsuite>
   </testsuites>
 </phpunit>]]></programlisting>
     </example>
 
+    <para>
+      Specify the testsuite using the <literal>--testsuite</literal> option:
+    </para>
+    <screen><userinput>phpunit --testsuite "prod"</userinput>
+
     <para>
       If <filename>phpunit.xml</filename> or
       <filename>phpunit.xml.dist</filename> (in that order) exist in the

src/5.0/en/organizing-tests.xml

@@ -121,13 +121,18 @@ OK (2 test, 2 assertions)</screen>
       <title>Composing a Test Suite Using XML Configuration</title>
       <programlisting><![CDATA[<phpunit bootstrap="src/autoload.php">
   <testsuites>
-    <testsuite name="money">
+    <testsuite name="prod">
       <directory>tests</directory>
     </testsuite>
   </testsuites>
 </phpunit>]]></programlisting>
     </example>
 
+    <para>
+      Specify the testsuite using the <literal>--testsuite</literal> option:
+    </para>
+    <screen><userinput>phpunit --testsuite "prod"</userinput>
+
     <para>
       If <filename>phpunit.xml</filename> or
       <filename>phpunit.xml.dist</filename> (in that order) exist in the

src/5.1/en/organizing-tests.xml

@@ -121,13 +121,18 @@ OK (2 test, 2 assertions)</screen>
       <title>Composing a Test Suite Using XML Configuration</title>
       <programlisting><![CDATA[<phpunit bootstrap="src/autoload.php">
   <testsuites>
-    <testsuite name="money">
+    <testsuite name="prod">
       <directory>tests</directory>
     </testsuite>
   </testsuites>
 </phpunit>]]></programlisting>
     </example>
 
+    <para>
+      Specify the testsuite using the <literal>--testsuite</literal> option:
+    </para>
+    <screen><userinput>phpunit --testsuite "prod"</userinput>
+
     <para>
       If <filename>phpunit.xml</filename> or
       <filename>phpunit.xml.dist</filename> (in that order) exist in the

src/5.2/en/organizing-tests.xml

@@ -121,13 +121,18 @@ OK (2 test, 2 assertions)</screen>
       <title>Composing a Test Suite Using XML Configuration</title>
       <programlisting><![CDATA[<phpunit bootstrap="src/autoload.php">
   <testsuites>
-    <testsuite name="money">
-      <directory>tests</directory>
+    <testsuite name="prod">
+      <directory>tests/Unit</directory>
     </testsuite>
   </testsuites>
 </phpunit>]]></programlisting>
     </example>
 
+    <para>
+      Specify the testsuite using the <literal>--testsuite</literal> option:
+    </para>
+    <screen><userinput>phpunit --testsuite "prod"</userinput>
+
     <para>
       If <filename>phpunit.xml</filename> or
       <filename>phpunit.xml.dist</filename> (in that order) exist in the