update travis matrix
update travis matrix

Signed-off-by: Nathan Williams <2e8aa918660411855c6d44d5bb2da677aa033255@teamtreehouse.com>

chef-cookbooks/chef-client,opscode-cookbooks/chef-client,mattray/chef-client,opscode-cookbooks/chef-client,chef-cookbooks/chef-client,scalp42/chef-client,scalp42/chef-client,opscode-cookbooks/chef-client,mattray/chef-client,chef-cookbooks/chef-client,mattray/chef-client,scalp42/chef-client