Change the nag level :-)

[kevin-gwyrdh]

Hello
Firstly this is a really good really useful app. I use todo.txt which is great for a centralised list but doesn't play well with lots of projects and projects files. I love how you have pulled everything together.

Is there a way of changing the nag level though. I know I am doing too many projects but still need to add extra tasks and don't need it to remind me there are too many in the list :-) I have changed the value which triggers the nag in nag.go and recompiled which is enough to preserve my sanity however a config setting would be great.