Clojurians Log v2

I added few short notes about updating packages to wiki: https://github.com/cljsjs/packages/wiki/Updating-packages

Would be cool to one day integrate extern generator to package tooling

Should be possible to load the JS into Rhino and generate externs using that from Boot

And as the packages depend on other cljsjs packages, the dependencies could be automatically loaded in JS engine/extern generator