fix migrate
fix index
Exportable module Add
install rpsec
Add Guardfile
bundle FactoryGirl gem.
add guard, guard-rails, guard-rspec to Gemfile
add gems / awesome_print, better_errors, binding_of_caller
implement Node.export
Exportable: TSV Formatter
implemenet tsv
test and
write tsv serialize test
Exportable::Formatter::Tsv#serialize ready
deserialize implement

test refactor