Update .gitattributes

Added some gitattributes to get GitHub's linguist to support Simba's script files.
Fix: AverageExtended (Init Result-variable)
Merge pull request #327 from WarPie/master

Fix: AverageExtended (Init Result-variable)
Disguise improvement and tray icon hints.
Merge branch 'master' of https://github.com/MerlijnWajer/Simba into disguise
Merge pull request #329 from Olly-/disguise

Disguise improvement and tray icon hints.
Option to enable or disable constants/variables in the function list.
Merge pull request #330 from Olly-/funclist_popup

Option to enable or disable constants/variables in the function list.