Added cert info for the bundled certs so that they can be used independently of sublime.wbond.net
Updated the cert handling to allow users to provide their own CA cert files that will be automatically merged with the ca-bundle.crt.

This makes it possible to add custom certs without losing them every time a Package Control update is released. Also added support for the wildcard domain, "*", when defining a cert, which allows for CA certs necessary for a proxy.