apply ruby settings to eruby as well

vimrc

@@ -107,8 +107,7 @@ if has("autocmd")
     autocmd FileType yaml setlocal sw=2 ts=2 sts=2
     autocmd FileType text setlocal textwidth=78
     autocmd BufRead,BufNewFile *.icf set syntax=cpp
-    autocmd FileType ruby setlocal sw=2 ts=2 sts=2
-    autocmd FileType ruby set iskeyword+=@-@,?
+    autocmd FileType ruby,eruby setlocal sw=2 ts=2 sts=2 iskeyword+=@-@,?
     autocmd BufRead,BufNewFile *.di set filetype=d
 
     if has("gui_running")