Add TravisCI config file.
Add TravisCI config file.

basho/riak-nodejs-client,authbox-lib/riak-nodejs-client,authbox-lib/riak-nodejs-client,GabrielNicolasAvellaneda/riak-nodejs-client,GabrielNicolasAvellaneda/riak-nodejs-client,basho/riak-nodejs-client