Download Spell and Suggestion Files when building

[moonglum]

Download these files into ~/.vim/spell:

• http://ftp.vim.org/pub/vim/runtime/spell/en.utf-8.spl
• http://ftp.vim.org/pub/vim/runtime/spell/en.utf-8.sug
• http://ftp.vim.org/pub/vim/runtime/spell/de.utf-8.spl
• http://ftp.vim.org/pub/vim/runtime/spell/de.utf-8.sug

[moonglum]

Done in #58