Create a Travis CI testing set-up for webinos

This commit adds a testing script (auto-test.sh) and then
references it from package.json.  It also adds a command-line
option to webinos_pzp and webinos_pzh such that they exit if
they have been started successfully (--test).  In addition, to
test the PZH, a travis-specific configuration file has been
added (travis_webinos_config.json) to change ports to high
numbers.  This needs fixing in the future.

Jira issue: WP-793