def find_membership(organization_id, membership_id)
      http.get("#{membership_endpoint(organization_id)}/#{membership_id}") do |response|
        Rexpense::Entities::Membership.new response.parsed_body
      end
    end
def find_membership(organization_id, membership_id)
      http.get("#{membership_endpoint(organization_id)}/#{membership_id}") do |response|
        Rexpense::Entities::Membership.new response.parsed_body
      end
    end
Get organization membership

 [API]
   Method: <tt>GET /api/v1/organizations/:id/memberships/:membership_id</tt>

   Documentation: http://developers.rexpense.com/api/memberships#show