[WIP] Add autoloading, composer, and bump version

.gitignore

@@ -0,0 +1 @@
+vendor/

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2017 Lumen Learning
+Copyright (c) 2019 Lumen Learning
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,14 +1,11 @@
 # Candela LTI
 
-A plugin that implements the LTI/Wordpress integration, found [here](https://github.com/lumenlearning/lti).
+A plugin that implements the LTI/Wordpress integration found [here](https://github.com/lumenlearning/lti).
 
 ## Synopsis
 
-[LTI](https://www.imsglobal.org/activity/learning-tools-interoperability) is a
-specification developed by IMS Global Learning Consortium. Candela
-LTI is a plugin that extends the core functionality of the
-[LTI Wordpress plugin](https://github.com/lumenlearning/lti) for the Candela
-technology stack.
+[LTI](https://www.imsglobal.org/activity/learning-tools-interoperability) is a specification developed by IMS Global Learning Consortium.
+Candela LTI is a plugin that extends the core functionality of the [LTI Wordpress plugin](https://github.com/lumenlearning/lti) for the Candela technology stack.
 
 ## Installation
 
@@ -18,9 +15,5 @@ Coming soon ...
 
 ### Manually
 
-1. Download or clone Candela LTI into your wordpress multisite plugins directory: `/path/to/wordpress/wp-content/plugins`
-1. Log in to your Wordpress multisite instance and navigate to `Network Admin > Plugins` and activate the Candela LTI plugin
-
-## License
-
-MIT - See LICENSE for more information
+1.  Download or clone Candela LTI into your wordpress multisite plugins directory: `/path/to/wordpress/wp-content/plugins`
+1.  Log in to your Wordpress multisite instance and navigate to `Network Admin > Plugins` and activate the Candela LTI plugin

autoloader.php

@@ -0,0 +1,43 @@
+<?php
+
+/**
+ * PSR-4 compliant autoload.
+ *
+ * @modified from https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-4-autoloader-examples.md
+ * @param string $class The fully-qualified class name.
+ *
+ * @return void
+ */
+
+\spl_autoload_register( function ( $class ) {
+
+	// project-specific namespace prefix
+	$prefix = 'Candela\Lti';
+	// base directory for the namespace prefix
+	$base_dir = __DIR__ . '/inc';
+	// 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 );
+
+	if ( false !== ( $last_ns_pos = strripos( $relative_class, '\\' ) ) ) {
+		$namespace = substr( $relative_class, 0, $last_ns_pos );
+		$class = substr( $relative_class, $last_ns_pos + 1 );
+		$file = str_replace( '\\', DIRECTORY_SEPARATOR, $namespace ) . DIRECTORY_SEPARATOR;
+	}
+
+	$file .= 'class-' . str_replace( '_', '-', $class ) . '.php';
+
+	$path = $base_dir . strtolower( $file );
+
+	// if the file exists, require it
+	if ( \file_exists( $path ) ) {
+		require $path;
+	}
+} );