Document in which languages plugins can be written

Closes geany#45.

page_content/support/plugins.md

@@ -28,7 +28,18 @@ If you wrote a plugin and it should be listed here, please email the project adm
 
 ### Developer Information
 
-The Plugin API documentation is currently incomplete, but already contains useful information. Please read the [HACKING][1] file for instructions on how to generate it and any related information. The generated API documentation can also be viewed online at https://www.geany.org/manual/reference/. In case of any questions, feel free to ask us on the mailing list.
+The Plugin API documentation is currently incomplete, but already contains useful information. Please read the [HACKING][1] file for instructions on how to generate it and any related information.
+
+Currently, Geany Plugins can be written in:
+- C
+- in Lua using the [GeanyLua plugin][2]
+- in Python and Lua when using the [Peasy plugin][3]
+
+The generated API documentation can also be viewed online at https://www.geany.org/manual/reference/.
+
+In case of any questions, feel free to ask us on the mailing list.
 
 
   [1]: https://raw.github.com/geany/geany/master/HACKING
+  [2]: https://plugins.geany.org/geanylua/geanylua-index.html
+  [3]: https://github.com/kugel-/peasy