bashrc: Use Pinto when a local perl 5.18 is used
bashrc: Use a local install of Vert.x

Manually update $PATH (similar to what's already done in bash_profile).
Vim: Tidy vimrc
Vim: Set indentation for Perl, JavaScript, shell
bashrc: Add json_diffable(), json_tidy()

Idea for integration with Vim: formalize these into scripts to place in
~/bin/, then the vimrc could simply pipe to json_tidy for the ',jt'
mapping.
bashrc: Look for ndenv