do not break on helptag generation errors
do not break on helptag generation errors

- just show the message
- closes #46

omalsa04/dotfiles,akiniwa/dotfiles,akiniwa/dotfiles,kotamat/vundle,kotamat/vundle,stephaneliu/dotfiles,sensorario/Vundle.vim,ppslinux/Vundle.vim,akiniwa/dotfiles,ppslinux/Vundle.vim,stephaneliu/dotfiles,ppslinux/Vundle.vim,ppslinux/Vundle.vim,ppslinux/Vundle.vim,kotamat/vundle,akiniwa/dotfiles,akiniwa/dotfiles,omalsa04/dotfiles,kotamat/vundle,kotamat/vundle,ppslinux/Vundle.vim,akiniwa/dotfiles,TLmaK0/my_vim_config