Merge remote-tracking branch 'origin/dev'

Conflicts:
	app.js

	deleted:    NewsCrawler.zip
	modified:   app.js
	modified:   app/models/noticia.js
	modified:   app/parsers.js
	new file:   app/parsers/abola.js
	new file:   app/parsers/blitz.js
	new file:   app/parsers/economico.js
	new file:   app/parsers/exameinformatica.js
	new file:   app/parsers/expresso.js
	modified:   app/parsers/jornali.js
	modified:   app/parsers/jornalnegocios.js
	modified:   app/parsers/jornalnoticias.js
	modified:   app/parsers/noticiasaominuto.js
	new file:   app/parsers/observador.js
	new file:   app/parsers/pcguia.js
	modified:   app/parsers/publico.js
	new file:   app/parsers/sicnoticias.js
	new file:   app/parsers/sol.js
	new file:   app/parsers/tek.js
	new file:   app/parsers/visao.js
	new file:   app/routes/api.js
	modified:   app/utils.js
	modified:   crawler.js
	new file:   nlp-toolkit/lib/freqdist/freqdist.js
	new file:   nlp-toolkit/lib/freqdist/index.js
	new file:   nlp-toolkit/lib/index.js
	new file:   nlp-toolkit/lib/tokenizer/index.js
	new file:   nlp-toolkit/lib/tokenizer/tokenizer.js
	new file:   nlp-toolkit/package.json
	new file:   nlp-toolkit/stopwords/stopwords.json
	modified:   package.json
	new file:   tfidf.js
	new file:   tfidf.json
	new file:   tfidf/index.js
	new file:   tfidf/package.json
	new file:   tfidf/sample.js
	new file:   tfidf/spec/tfidf.js