Fix livescript filetype, closes #666

autoload/polyglot/sleuth.vim

@@ -298,7 +298,6 @@ let s:globs = {
   \ 'litcoffee': '*.litcoffee,*.coffee.md',
   \ 'lite': '*.lite,*.lt',
   \ 'litestep': '',
-  \ 'livescript': '*.ls,*._ls,Slakefile',
   \ 'llvm': '*.ll',
   \ 'log': '*.log,*.LOG,*_log,*_LOG',
   \ 'logcheck': '',
@@ -309,6 +308,7 @@ let s:globs = {
   \ 'lout': '*.lou,*.lout',
   \ 'lpc': '*.lpc,*.ulpc',
   \ 'lprolog': '*.sig',
+  \ 'ls': '*.ls,*._ls,Slakefile',
   \ 'lsl': '*.lsl',
   \ 'lss': '*.lss',
   \ 'lua': '*.lua,*.fcgi,*.nse,*.p8,*.pd_lua,*.rbxs,*.rockspec,*.wlua,.luacheckrc',