Update core git config files, vendor installs for unit testing

Update .gitattributes with more files to ignore
Add .gitignore for php unit test cache
Install dotenv file parser for unit testing
Update current test pages with dotenv file parser (replaces function
call)

Documentation PHPdoc update for checkMe method call

test/aws_read_env_tests.php

@@ -0,0 +1,23 @@
+<?php
+
+// just print out env data nd connect data
+// checkMe from AmazonIntentives call is requal to
+// run_info_test === true in aws_gift_card_tests.php
+
+$loader = require '../vendor/autoload.php';
+// need to add this or it will not load here
+$loader->addPsr4('gullevek\\', __DIR__ . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'src');
+// print "LOADER: <pre>" . print_r($loader, true) . "</pre>";
+
+use gullevek\AmazonIncentives\AmazonIncentives;
+use gullevek\dotEnv\DotEnv;
+
+// load env data with dotenv
+DotEnv::readEnvFile(__DIR__);
+
+print "_ENV: <pre>" . print_r($_ENV, true) . "</pre>";
+
+$aws = new AmazonIncentives();
+print "checkMe: <pre>" . print_r($aws->checkMe(), true) . "</pre>";
+
+// __END__