add netid spoofing sign_in method, tell capybara to use localhost:3000 assets when rendering
put guard-spork in the bundle so we don't have to install it locally every time, correct guardfile to use new cmd syntax
make an example integration test for logging in and seeing the main page
put back the unless Rails.env.test? so the rest of the testing suite can still run
move old integration test to the requests folder, see https://github.com/jnicklas/capybara#using-capybara-with-rspec
Merge branch 'master' into 416_integration_tests

Conflicts:
	Gemfile.lock
removed unnecessary Spork code
Merge pull request #1000 from YaleSTC/416_integration_tests

resolves #416