Added vim modeline to lang.txt
Added vim modeline to lang.txt

This prevents vim from using syntax highlighting on the file, which you
really don't want for two reasons:
- There are no syntax files for lang.txt
- The file is huge and syntax highlighting is slow

(vim thought it was an asciidoc file...)

morkt/vndb,erengy/vndb,morkt/vndb,christian-roggia/vndb,morkt/vndb,erengy/vndb,christian-roggia/vndb,christian-roggia/vndb,morkt/vndb,erengy/vndb,morkt/vndb