Add autoloader that doesn't depend on composer.

autoload.php

@@ -0,0 +1,37 @@
+<?php
+if (\file_exists(__DIR__.'/vendor/autoload.php')) {
+    require __DIR__.'/vendor/autoload.php';
+} else {
+    /**
+     * You aren't using Composer, so, here's an autoloader instead.
+     */
+    spl_autoload_register(function ($class) {
+        $prefix = 'ParagonIE\\Halite\\';
+        $base_dir = __DIR__.'/src/';
+
+        // Does the class use the namespace prefix?
+        $len = \strlen($prefix);
+        if (\strncmp($prefix, $class, $len) !== 0) {
+            // no, move to the next registered autoloader
+            return;
+        }
+
+        // Get the relative class name
+        $relative_class = \substr($class, $len);
+
+        // Replace the namespace prefix with the base directory, replace namespace
+        // separators with directory separators in the relative class name, append
+        // with .php
+        $file = $base_dir.
+            \str_replace(
+                ['\\', '_'],
+                '/',
+                $relative_class
+            ).'.php';
+
+        // If the file exists, require it
+        if (\file_exists($file) && \strpos(\realpath($file), $base_dir) === 0) {
+            require $file;
+        }
+    });
+}

test/phpunit.sh

@@ -53,7 +53,7 @@ if [ $? -eq 0 ]; then
     echo
     echo -e "\033[33mBegin Unit Testing\033[0m"
     # Run the testing suite
-    php phpunit.phar --bootstrap "$parentdir/vendor/autoload.php" "$parentdir/test/unit"
+    php phpunit.phar --bootstrap "$parentdir/autoload.php" "$parentdir/test/unit"
     EXITCODE=$?
     # Cleanup
     if [ "$clean" -eq 1 ]; then