[ci skip] Add upgrade instructions for 3.0.1
diff --git a/user_guide_src/source/installation/upgrade_301.rst b/user_guide_src/source/installation/upgrade_301.rst
new file mode 100644
index 0000000..f38d340
--- /dev/null
+++ b/user_guide_src/source/installation/upgrade_301.rst
@@ -0,0 +1,19 @@
+#############################
+Upgrading from 3.0.0 to 3.0.1
+#############################
+
+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 CLI error templates
+=======================================
+
+Replace all files under your *application/errors/cli/* directory.
\ No newline at end of file
diff --git a/user_guide_src/source/installation/upgrading.rst b/user_guide_src/source/installation/upgrading.rst
index 89e90e7..30382ae 100644
--- a/user_guide_src/source/installation/upgrading.rst
+++ b/user_guide_src/source/installation/upgrading.rst
@@ -8,7 +8,8 @@
 .. toctree::
 	:titlesonly:
 
-	Upgrading from 2.2.x to 3.0.0 <upgrade_300>
+	Upgrading from 3.0.0 to 3.0.1 <upgrade_301>
+	Upgrading from 2.2.x to 3.0.x <upgrade_300>
 	Upgrading from 2.2.0 to 2.2.1 <upgrade_221>
 	Upgrading from 2.1.4 to 2.2.0 <upgrade_220>
 	Upgrading from 2.1.3 to 2.1.4 <upgrade_214>