add user Vagrantfile
add binit alias
change vim color scheme to solarized
add vim plugin tpope/surround
add vim plugin tpope/repeat

This makes `.` behave as expected for plugin mapped commands like
tpope/vim-surround.
add ppv alias for puppet parser validate
add vim plugin tpope/commentary

and set commentstring correctly for puppet files
disable arrow keys in vim
add vim plugin osyo-manga/vim-over
remove old settings from .ssh/config
add config for provider plugins to user Vagrantfile

add config blocks for aws and digital_ocean providers that load
sensitive settings (api keys) from ~/.vagrant.d/keys.yaml
add redacted .vagrant.d/keys.yaml example
remove old scripts