Fixed syntax error.
Fixed syntax error.

Fixed mailgun_recipient_variables hash syntax error.
jorgemanrubia/mailgun_rails,jorgemanrubia/mailgun_rails,rgraff/mailgun_rails,Healthism/mailgun_rails,rgraff/mailgun_rails,Healthism/mailgun_rails,Healthism/mailgun_rails,nicolasmlv/mailgun_rails,jorgemanrubia/mailgun_rails,nicolasmlv/mailgun_rails,rgraff/mailgun_rails