added addCookies to RequestBuilder and Snap.Test
Merge pull request #176 from henrylaxen/master

Add addCookies to Snap.Test
Fix #177: compatible Eq and Ord instances for Method.
Merge pull request #178 from meiersi/fix-method-ord-instance

Fix #117: compatible Eq and Ord instances for Method.
Merge branch 'master' into io-streams