issues installing Ruby 2/Rails 4

[seanhharrison]

FYI, I had issues installing:

during "bundle install"

Using nickname (0.1) from git://github.com/bsimpson/Nickname.git (at master) 
nickname at /home/vagrant/.rvm/gems/ruby-2.0.0-p0/bundler/gems/Nickname-d543d81cc9a0 did not have a valid gemspec.
This prevents bundler from installing bins or native extensions, but that may not affect its functionality.
The validation message from Rubygems was:
["nickname-0.1.gem"] are not files

during "rake nicknames:populate"

Truncating nicknames table
Downloading nicknames CSV file from http://code.google.com/p/nickname-and-diminutive-names-lookup/
rake aborted!
uninitialized constant Net
/home/vagrant/.rvm/gems/ruby-2.0.0-p0/bundler/gems/Nickname-d543d81cc9a0/lib/nickname/tasks.rb:12:in `block (2 levels) in <top (required)>'
/home/vagrant/.rvm/gems/ruby-2.0.0-p0/bin/ruby_noexec_wrapper:14:in `eval'
/home/vagrant/.rvm/gems/ruby-2.0.0-p0/bin/ruby_noexec_wrapper:14:in `<main>'
Tasks: TOP => nicknames:populate