Simplify vim-files

Resolves #1500

tools/vim/README.txt

@@ -22,24 +22,22 @@ in the syntax file (lammps.vim). You can easily add new ones.
 
 (0) Create/edit ~/.vimrc to contain:
          syntax on
-(1) Create directories ~/.vim and ~/.vim/syntax
+(1) Create directories ~/.vim/syntax and ~/.vim/ftdetect
 (2) Copy lammps.vim to ~/.vim/syntax/lammps.vim
-(3) Create/edit ~/.vim/filetype.vim to contain
+(3) Copy filetype.vim as ~/.vim/ftdetect/lammps.vim
-
-" vim syntax highlight customizations
-if exists("did_load_filetypes")
- finish
-endif
-
-augroup filetypedetect
- au! BufRead,BufNewFile in.*           setfiletype lammps
- au! BufRead,BufNewFile *.lmp          setfiletype lammps
-augroup END
-(4) the end
 
 
 Gerolf Ziegenhain <gerolf@ziegenhain.com> 2007
 
+Distribution Packaging guidelines:
+==================================
+
+(0) Copy lammps.vim to ${VIMFILES}/syntax/lammps.vim
+(1) Copy filetype.vim as ${VIMFILES}/ftdetect/lammps.vim
+
+${VIMFILES} is typically /usr/share/vim/vimfiles
+Consult your packaging guidlines for exact location.
+
 ---------------
 
 updated by Sam Bateman, 11/2010

tools/vim/filetype.vim

@@ -0,0 +1,4 @@
+augroup filetypedetect
+ au! BufRead,BufNewFile in.*           setfiletype lammps
+ au! BufRead,BufNewFile *.lmp          setfiletype lammps
+augroup END