Moved code to src directory

src/autoload.php

@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * Autoloads files with classes when needed.
+ *
+ * @since  1.6.0
+ * @param  string $class_name Name of the class being requested.
+ * @return void
+ */
+function wpstrava_autoload_classes( $class_name ) {
+	$parts = explode( '_', $class_name );
+
+	// If our class doesn't have our namespace, don't load it.
+	if ( empty( $parts[0] ) || 'WPStrava' !== $parts[0] ) {
+		return;
+	}
+
+	// @TODO Add directory searching if they get created.
+	$file = WPSTRAVA_PLUGIN_DIR . '/src/' . implode( '/', $parts ) . '.php';
+	if ( file_exists( $file ) ) {
+		include_once $file;
+	}
+}
+spl_autoload_register( 'wpstrava_autoload_classes' );