encamel.rb

#!/usr/bin/env ruby

gem 'activesupport'
require 'active_support/core_ext/string/inflections'

snake = ARGV.first
camel = snake.camelize(:lower)

system %{git grep -l #{snake} | xargs ruby -p -i -e '$_.gsub! /#{snake}/, "#{camel}"'}

# encamel.rb my_variable
# encamel.rb my_other_variable
# ...
# git status
# git commit -am "Standardized to JS naming convention."