You can clone with
HTTPS or Subversion.
I get this error when I try building the book in any format
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': iconv will be deprecated in the future, use String#encode instead.
it should build fine despite that deprecation notice, was there any more to the error message?
It does indeed build, I thought there would be a pdf version.