[git svn howto] added how to fetch svn contents without cloning
[git svn howto] added how to fetch svn contents without cloning


Former-commit-id: e9b1eb3605cff37d783cfc14f894192adcad2fe6
Former-commit-id: 90271ea1953c217baba89b5ac66dc13e42aa075c
pygeo/pycmbs,pygeo/pycmbs