vim-zenroom2 error

02:13:20 (master=) ~/.vim$ vim
Error detected while processing /Users/mpraglowski/.vim/bundle/vim-zenroom2/plugin/zenroom2.vim:
line   65:
E128: Function name must start with a capital or "s:": g:zenroom_goyo_before()
line   67:
E133: :return not inside a function
line   74:
E193: :endfunction not inside a function
line   76:
E128: Function name must start with a capital or "s:": g:zenroom_goyo_after()
line   78:
E133: :return not inside a function
line   88:
E193: :endfunction not inside a function
line   90:
E700: Unknown function: g:zenroom_goyo_before
E700: Unknown function: g:zenroom_goyo_after
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