remove comments

Signed-off-by: Tomas Neme <lacrymology@gmail.com>
save with {safe:true}

unless you pass {safe:true} to mongodb-native's insert/update/save, the callback is fired immediatly

http://mongodb.github.io/node-mongodb-native/markdown-docs/insert.html

Signed-off-by: Tomas Neme <lacrymology@gmail.com>