ignore npm-debug.log file

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
replace gulp start by using run-sequence.

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

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
Merge pull request #41 from appleboy/patch

some change for gulp