Specify IUP 3.13 in documentation

diff --git a/ResearchTimer.lua b/ResearchTimer.lua
index 23b414c..4a2b4ff 100644
--- a/ResearchTimer.lua
+++ b/ResearchTimer.lua
@@ -5,7 +5,7 @@ RT = {
 	name = "ResearchTimer",
 	font = "ZoFontGame",
 	cmdsetup = "/rt",
-	version = "v1.5",
+	version = "v1.6",
 	playername = "",
 	Init_done = false,
 	UI = {},
diff --git a/ResearchTimer.txt b/ResearchTimer.txt
index 5142ff6..2f852b4 100644
--- a/ResearchTimer.txt
+++ b/ResearchTimer.txt
@@ -1,7 +1,7 @@
 ## Title: |c96FF00Research Timer|r - |c96FF00 v1|r
 ## APIVersion: 100011
 ## SavedVariables: ResearchTimer
-## Version: 1.5
+## Version: 1.6
 ## Author: Hisdad


diff --git a/doc/changelog.txt b/doc/changelog.txt
index 9642dbb..24fbf0b 100644
--- a/doc/changelog.txt
+++ b/doc/changelog.txt
@@ -1,3 +1,6 @@
+2015-05-04 v1.6
+	Change to doc to specify IUP 3.13
+
 2015-04-30  v1.5
 	Small fix to localisation. Sadly the viewer is still not unicode compatible.
 	More effort in the offline use documentation and some screenshots.
diff --git a/doc/offline_use.txt b/doc/offline_use.txt
index c19c639..a565534 100644
--- a/doc/offline_use.txt
+++ b/doc/offline_use.txt
@@ -1,11 +1,13 @@
 The program "RTOffline.lua" will read the saved variables file and presents a grid on your windows desktop of your research projects.
 Non-English users may see garbles test. Sorry, can't fix.

-To use it you need a copy of IUP for lua which you can download from here.
+To use it you need a copy of IUP 3.13 for lua which you can download from here.

 The site page:  http://webserver2.tecgraf.puc-rio.br/iup/
 download http://sourceforge.net/projects/iup/files/3.13/

+IUP 3.14 is out but it is packaged differently and I haven't tested it.
+


 Unzip IUP into a folder. No other installation procedure is required. I.E it's portable.