added file for the ranker
added needed methods without body for overview
added method tf*
added idf
added tfidf
added normalizing vector function
added calculatiosn for search queries and made general calculation methods
added method for calculating score
added calculate score
did some oprydning(xD) and added a list with abbrevations
added a Search line in the console so it is possible to search and get the sites returned with the best scores
Implemented multiple crawlers.
Moved the contents of a single crawler into a nested Crawler.Spider class.
Removed all the comments in the PorterStemmer.
Removed unreferenced methods.
Removed ToString from PorterStemmer.
Ensured that all methods in PorterStemmer are private.
Rewrote the PorterStemmer to be usable through a public static method only.
Included a TermStemmer delegate in the project and replaced references to the old IStemmer with this new delegate.
Removed the IStemmer interface.