add brower sync module.

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

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

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

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
Merge pull request #18 from appleboy/browser-sync

Browser sync