Bulk (mostly documentation) update

 - Remove PHP version from license notices
 - Bump year number in copyright notices
 - Recommend PHP 5.4 or newer to be used
 - Tell Travis-CI to test on PHP 5.3.0 instead of the latest 5.3 version

Related: #3450
diff --git a/system/language/english/profiler_lang.php b/system/language/english/profiler_lang.php
index 8350433..1d11104 100644
--- a/system/language/english/profiler_lang.php
+++ b/system/language/english/profiler_lang.php
@@ -2,11 +2,11 @@
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.2.4 or newer
+ * An open source application development framework for PHP
  *
  * This content is released under the MIT License (MIT)
  *
- * Copyright (c) 2014, British Columbia Institute of Technology
+ * Copyright (c) 2014 - 2015, British Columbia Institute of Technology
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -29,7 +29,7 @@
  * @package	CodeIgniter
  * @author	EllisLab Dev Team
  * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
- * @copyright	Copyright (c) 2014, British Columbia Institute of Technology (http://bcit.ca/)
+ * @copyright	Copyright (c) 2014 - 2015, British Columbia Institute of Technology (http://bcit.ca/)
  * @license	http://opensource.org/licenses/MIT	MIT License
  * @link	http://codeigniter.com
  * @since	Version 1.0.0
@@ -37,27 +37,27 @@
  */
 defined('BASEPATH') OR exit('No direct script access allowed');
 
-$lang['profiler_database']		= 'DATABASE';
+$lang['profiler_database'] = 'DATABASE';
 $lang['profiler_controller_info'] = 'CLASS/METHOD';
-$lang['profiler_benchmarks']	= 'BENCHMARKS';
-$lang['profiler_queries']		= 'QUERIES';
-$lang['profiler_get_data']		= 'GET DATA';
-$lang['profiler_post_data']		= 'POST DATA';
-$lang['profiler_uri_string']	= 'URI STRING';
-$lang['profiler_memory_usage']	= 'MEMORY USAGE';
-$lang['profiler_config']		= 'CONFIG VARIABLES';
-$lang['profiler_session_data']	= 'SESSION DATA';
-$lang['profiler_headers']		= 'HTTP HEADERS';
-$lang['profiler_no_db']			= 'Database driver is not currently loaded';
-$lang['profiler_no_queries']	= 'No queries were run';
-$lang['profiler_no_post']		= 'No POST data exists';
-$lang['profiler_no_get']		= 'No GET data exists';
-$lang['profiler_no_uri']		= 'No URI data exists';
-$lang['profiler_no_memory']		= 'Memory Usage Unavailable';
-$lang['profiler_no_profiles']	= 'No Profile data - all Profiler sections have been disabled.';
-$lang['profiler_section_hide']	= 'Hide';
-$lang['profiler_section_show']	= 'Show';
-$lang['profiler_seconds']		= 'seconds';
+$lang['profiler_benchmarks'] = 'BENCHMARKS';
+$lang['profiler_queries'] = 'QUERIES';
+$lang['profiler_get_data'] = 'GET DATA';
+$lang['profiler_post_data'] = 'POST DATA';
+$lang['profiler_uri_string'] = 'URI STRING';
+$lang['profiler_memory_usage'] = 'MEMORY USAGE';
+$lang['profiler_config'] = 'CONFIG VARIABLES';
+$lang['profiler_session_data'] = 'SESSION DATA';
+$lang['profiler_headers'] = 'HTTP HEADERS';
+$lang['profiler_no_db'] = 'Database driver is not currently loaded';
+$lang['profiler_no_queries'] = 'No queries were run';
+$lang['profiler_no_post'] = 'No POST data exists';
+$lang['profiler_no_get'] = 'No GET data exists';
+$lang['profiler_no_uri'] = 'No URI data exists';
+$lang['profiler_no_memory'] = 'Memory Usage Unavailable';
+$lang['profiler_no_profiles'] = 'No Profile data - all Profiler sections have been disabled.';
+$lang['profiler_section_hide'] = 'Hide';
+$lang['profiler_section_show'] = 'Show';
+$lang['profiler_seconds'] = 'seconds';
 
 /* End of file profiler_lang.php */
 /* Location: ./system/language/english/profiler_lang.php */
\ No newline at end of file