Criado o modelo Token para guardar a frequencia de palavras associadas a uma Category
Constante que guarda stopwrods recebidas a partir de um ficheiro de text
Merge branch 'ml' of github.com:rchicoria/pois_enrichment_app into ml

Conflicts:
	config/initializers/app_constants.rb
	db/schema.rb
First steps for machine learning
Tokenize to remove TICE rejected words
Machine Learning algorithm now learning POI tokens
Merge branch 'ml' of github.com:rchicoria/pois_enrichment_app into ml

Conflicts:
	app/models/token.rb
	db/migrate/20121123033657_create_locais.rb
Now saving the POIs from the initial fetch
Performance improvements
Poi creation
Merge branch 'ml' of https://github.com/rchicoria/pois_enrichment_app into ml
Corrected many bugs in the POIs matching algorithm
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Performance improvements
Data model corrections
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Trying to solve rake problems
Merge branch 'ml' of github.com:rchicoria/pois_enrichment_app into ml

Conflicts:
	lib/tasks/pois.rake
Rake for POIs extraction fully working