You can verify your email address under the profile page of your account.
1.) Navigate to your profile page by clicking the 'Profile' link in the upper-right hand drop down menu.
2.) Click the 'Manage email addresses' link.
3.) Click the 'Resend verification email' link.
4.) Check your email inbox for a message from firstname.lastname@example.org with a verification link.
5.) Click the link to verify your address.