Point people at README for SELF_SIGNED_CERT_IN_CHAIN errors

Hello @nicks, 

Please review the following commits I made in branch 'dpup-help'.

2184d032524df85a9106bb381e8ec3de0e6eef1b (2014-09-24 09:27:46 -0700)
Point people at README for SELF_SIGNED_CERT_IN_CHAIN errors

9132de888b448e7ed49656efb1e63d2b56e29d24 (2014-09-17 11:34:35 -0700)
Update NPM dependencies

R=@nicks