neovim: add rshada/wshada

Fixes #22.

Author: blueyed

autoload/vimlparser.vim

@@ -1850,7 +1850,9 @@ function! s:VimLParser.parse_cmd_syntax()
 endfunction
 
 let s:VimLParser.neovim_additional_commands = [
-      \ {'name': 'tnoremap', 'minlen': 8, 'flags': 'EXTRA|TRLBAR|NOTRLCOM|USECTRLV|CMDWIN', 'parser': 'parse_cmd_common'}]
+      \ {'name': 'tnoremap', 'minlen': 8, 'flags': 'EXTRA|TRLBAR|NOTRLCOM|USECTRLV|CMDWIN', 'parser': 'parse_cmd_common'},
+      \ {'name': 'rshada', 'minlen': 3, 'flags': 'BANG|FILE1|TRLBAR|CMDWIN', 'parser': 'parse_cmd_common'},
+      \ {'name': 'wshada', 'minlen': 3, 'flags': 'BANG|FILE1|TRLBAR|CMDWIN', 'parser': 'parse_cmd_common'}]
 
 let s:VimLParser.neovim_removed_commands = [
       \ {"name":"Print", "minlen":1, "flags":"RANGE|WHOLEFOLD|COUNT|EXFLAGS|TRLBAR|CMDWIN", "parser":"parse_cmd_common"},