better comments and readme

src/BrowserTest.php

@@ -1,6 +1,11 @@
 <?php
 namespace JHodges\PHPUnitBase;
 
+/**
+* Set up the Selenium test using args from environment
+* Take a screenshot on failed test
+**/
+
 abstract class BrowserTest extends \PHPUnit_Extensions_Selenium2TestCase{
 
   public function setUp(){

src/DomainRedirectTest.php

@@ -1,6 +1,11 @@
 <?php
 namespace JHodges\PHPUnitBase;
 
+/**
+* This will test all combinations of http/https/www/trailing slash.
+* Checking that they all redirect to the same destination URL.
+**/
+
 abstract class DomainRedirectTest extends UrlRedirectTest{
 
 	/**

src/UrlRedirectTest.php

@@ -3,6 +3,11 @@ namespace JHodges\PHPUnitBase;
 
 use \PHPUnit\Framework\TestCase;
 
+/**
+* This will check (using curl) that the source
+* URL redirects to the destination URL
+**/
+
 abstract class UrlRedirectTest extends TestCase{
 
 	/**