Create dht.prototype.needMorePeers, to hold whether or not we need to look into nodes for more peers
Begin refactor node crawling from crawl to crawlNode
Begin moving peer crawling functionality to Crawler.prototype.crawlPeers
Call crawl peers when peers are present
Make work in naive way crawlPeers
Set up testing for deleting nodes after crawling
Merge branch 'refactorCrawler' of https://github.com/Trrnts/Trrnts into refactorCrawler

Conflicts:
	workers/crawler.js