Clarify that examples are for signing in (as opposed to up)
Merge pull request #1098 from artfuldodger/readme-example-language

Clarify that examples are for signing in (as opposed to up)
Adding rspec's 'expect' syntax to examples in documentation
Merge pull request #1102 from aceofbassgreg/Updating_README

Adding rspec's 'expect' syntax to examples in documentation