Merge pull request #33 from jasonmit/u/jasonmit/fix-node-6

fix: target tough-cookie 2.x to preserve node 6 support

Author: analog-nico

test/spec/request-test.js

@@ -146,7 +146,7 @@ describe('Request-Promise-Native', function () {
         var cookiejar = rp.jar();
 
         expect(function () {
-            cookiejar.setCookie(sessionCookie, 'https://api.mydomain.com');
+            cookiejar.setCookie(sessionCookie.toString(), 'https://api.mydomain.com');
         }).to.not.throw();
 
     });