Bump Gemfile.lock for version update
Simplify client config: protocol, host, port, auth can all be specified with a URL

Bumps the version number to reflect the API change.

  Cleversafe::Connection.new(
    :host     => 'example.com',
    :protocol => 'https',
    :username => 'user',
    :password => 'pass'
  )

Becomes:

  Cleversafe::Connection.new('https://user:pass@example.com')
Fix Connection#vaults and Object#metadata, which expect a raw response body
Remove unused options from Object#url
Remove unnecessary Connection#vault_exists?