Merge branch 'develop' of git://github.com/bcit-ci/CodeIgniter into develop

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+#############################
+Upgrading from 3.0.1 to 3.0.2
+#############################
+
+Before performing an update you should take your site offline by
+replacing the index.php file with a static one.
+
+Step 1: Update your CodeIgniter files
+=====================================
+
+Replace all files and directories in your *system/* directory.
+
+.. note:: If you have any custom developed files in these directories,
+	please make copies of them first.
+
+Step 2: Update your application/config/constants.php file
+=========================================================
+
+The *application/config/constants.php* file has been updated to check
+if constants aren't already defined before doing that, making it easier
+to add an environment-specific configuration.
+
+.. note:: If you've made modifications to this file, please make a
+	backup first and cross-check the differences first.
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