Update runtime files. Add support for J.
diff --git a/runtime/ftplugin/j.vim b/runtime/ftplugin/j.vim
new file mode 100644
index 0000000..8e3bc67
--- /dev/null
+++ b/runtime/ftplugin/j.vim
@@ -0,0 +1,17 @@
+" Vim filetype plugin
+" Language: J
+" Maintainer: David Bürgin <676c7473@gmail.com>
+" Last Change: 2013-09-21
+
+if exists("b:did_ftplugin")
+ finish
+endif
+let b:did_ftplugin = 1
+
+setlocal iskeyword=48-57,65-90,_,97-122
+setlocal comments=:NB.
+setlocal commentstring=NB.\ %s
+setlocal formatoptions-=t formatoptions+=croql
+setlocal shiftwidth=2 softtabstop=2 expandtab
+
+let b:undo_ftplugin = "setl et< sts< sw< fo< cms< com< isk<"