Bump version to 0.1.3 for next release
Fix https requests on Windows

Windows nodes are unable to validate the HTTPS certificate due to
omnibus ruby not being able to locate the cacert.pem file. This tells
Net::HTTP where to find the cacert.pem file, and to respect the values
contained within.
Encode URI for remote file.

The Windows installers contain spaces which need to be encoded for the
address to be resolved.