doc/index.md: Mention Extra-Opts and Guidelines

Add links to the Nagios Plugin Develepment Guidelines and to the
Extra-Opts documentation.

1 files changed, 10 insertions, 0 deletions

diff --git a/web/input/doc/index.md b/web/input/doc/index.md
index 8f22011..86745de 100644
--- a/web/input/doc/index.md
+++ b/web/input/doc/index.md
@@ -18,9 +18,19 @@ The Nagios Plugins documentation is split up into three parts:
    A video that shows how to write your own check using the
    [Nagios::Plugin][module] Perl module.
 
+Furthermore, there are individual documents that cover specific topics:
+
+* **[Extra-Opts][opts]**  
+  Telling plugins to read options from a configuration file.
+
+* **[Nagios Plugin Development Guidelines][guidelines]**  
+  Reference documentation for plugin developers.
+
 [man]: doc/man/index.html "Manual Pages"
 [faq]: doc/faq/index.html "Frequently Asked Questions"
 [video]: doc/presentation.html "Nagios::Plugin Presentation"
 [module]: http://search.cpan.org/dist/Nagios-Plugin/ "Nagios::Plugin"
+[opts]: doc/extra-opts.html
+[guidelines]: doc/guidelines.html
 
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