create models and controllers
adjust fetcher
add stemmer
first commit new branch
add indexer
add inverted_index
implemented ferret
add gem gsl
remove wrong folder
adjust fetcher
adjust vocabulary
bugfix
Merge branch 'try' of https://github.com/jonatasdlp/web-search-rails into try

Conflicts:
	app/models/fetcher.rb
	app/models/pagerank.rb
fix merge data
Merge branch 'dev'

Conflicts:
	public/old/document.rb
	public/old/fetcher.rb
	public/old/index.rb
	public/old/ip.rb
	public/old/pagina.rb
	public/old/resolver.rb
	public/old/robots.rb
	public/old/url.rb
	public/old/vocabulary.rb