When a user hasn't signed in and visits the index of the application:
if they visit another URL, they are redirected to the index
they can see a link to a sign in page which prompts them to enter in their email address and password.
they can only enter valid emails
When they submit their details, they are logged in and redirected to their posts page.
Importance: High
Acceptance Criteria
When a user hasn't signed in and visits the index of the application:
if they visit another URL, they are redirected to the index they can see a link to a sign in page which prompts them to enter in their email address and password. they can only enter valid emails When they submit their details, they are logged in and redirected to their posts page.