return callback if file name match '^_' format.
Cleaned-up and normalized
Eat your own dog food, people!
Fix linter violations
Have mocha gulp, update travis, remove makefile
gulp mocha is 0.10 only, so, let's bump this
Travis hint as well
update coding style for following principles of idiomatic.js

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>