Added matlab editor global gitignore to remove autosaved backups

Global/Matlab.gitignore

@@ -0,0 +1,11 @@
+##---------------------------------------------------
+## Remove autosaves generated by the Matlab editor
+## We have git for backups!
+##---------------------------------------------------
+
+# Windows default autosave extension
+*.asv
+
+# OSX / *nix default autosave extension
+*.m~
+