add tools#show & matching route + test
add update method
add working route for button
add route for tools#update
add notes from hsing-hui, tests for tools#update
add factory_girl_rails
add factory file
what goes in here?
add factory
tests now pass with factory_girl_rails
adding syntax config thingy to rails_helper
using contexts and before statements on posts#new tests as @Elffers recommended :)
removing spec/support/factory_girl.rb
tidying tools#create tests with context and before statements @Elffers