Merge pull request #16 from ahwayakchih/master

Prevent re-creating certificate on each request. Creating it once should...
Added another failing test for SNI certificates.
Do not try to use SNI when pem is not available
Fix test for SNI
Merge branch 'master' of github.com:Hypermediaisobar-admin/hyperProxy

Conflicts:
	test/test-proxy.js
Tiny comment update.