wrong doc or code bug

[andreabalducci]

Instagram.tags.unsubscribe_all() throws because params is undefined.

InstagramTags.prototype.unsubscribe_all = function(params) { params['object'] = 'tag'; return this.parent.subscriptions._unsubscribe(params); };

[obihann]

I just noticed a similar issue with Instagram.media.popular(). The docs say it can be called without any params however it throws the exact same error. I will be doing a fork and pull request later today (if time allows) to fix this.