Merge pull request #63 from enotodden/ipv6

Full IPv6 support.
Bug in str_find. while slen ~= 0 it should be.
Mustache parser not far from finished. Only thing left is nested sections.
Added convinience function to disable all logging.
Require Mustace module. Check for not nil in get_argument.
Mustache template engine almost finished. Only missing partials in sections.
Added Travis CI yml file.
Added install step to travis
Specify Lua interpreter for busted to use.
Try 2 on interpreter setting.
Try forcing Travis...
More trickery for Travis.
More trickery for Travis.
More trickery for Travis.
Added unit test run of Mustache.
Remove printing in test.
Removed printing and added time check.
Added Travis status and link to README.
Remove unused env
Basic integration test in test target for Travis.