Added some cypress tests

cypress-tests/cypress/e2e/01-login_spec.cy.js

@@ -0,0 +1,27 @@
+describe('Testing Log In', () => {
+  it('Gets Log In Page and Logs In', () => {
+    cy.visit('/')
+
+    cy.contains('Log In').click()
+
+    // Should be on a new URL which
+    // includes '/commands/actions'
+    cy.url().should('include', '/users/sign_in')
+
+    // Get an input, type into it
+    cy.get('[id=user_email]').type(Cypress.env('CYPRESS_USERNAME'))
+
+    //  Verify that the value has been updated
+    cy.get('[id=user_email]').should('have.value', Cypress.env('CYPRESS_USERNAME'))
+    
+    // Get an input, type into it
+    cy.get('[id=user_password]').type(Cypress.env('CYPRESS_PASSWORD'))
+
+    //  Verify that the value has been updated
+    cy.get('[id=user_password]').should('have.value', Cypress.env('CYPRESS_PASSWORD'))
+    
+    cy.get('input[type=submit]').click()
+    
+    cy.contains('Signed in successfully')
+  })
+})