Update changes.txt

Fixes #98 - Lua For Windows Installer - 'h' is an invalid URL.

Author: rjpcomputing

changes.txt

@@ -1,4 +1,9 @@
 =================== Lua For Windows ===================
+10/22/2015  Version 5.1.4-50
+* Fixes #98 - Lua For Windows Installer - 'h' is an invalid URL.
+* Changed app URL to point to GitHub.
+* Changed minimum version to reflect the GitHub version.
+
 09/23/2015  Version 5.1.4-49
 + Added delaunay Lua module
 + Added Binary Heaps Lua module