Improve guard so it works for no eof new line

ftplugin/ruby.vim

@@ -1,4 +1,5 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'ruby') == -1
+
 " Vim filetype plugin
 " Language:		Ruby
 " Maintainer:		Tim Pope <vimNOSPAM@tpope.org>
@@ -433,4 +434,5 @@ endfunction
 "
 
 " vim: nowrap sw=2 sts=2 ts=8:
+
 endif