Add note on requirements and preventing model re-downloads (closes #1143)
Add note on requirements and preventing model re-downloads (closes #1143)

spacy-io/spaCy,explosion/spaCy,explosion/spaCy,spacy-io/spaCy,honnibal/spaCy,raphael0202/spaCy,raphael0202/spaCy,explosion/spaCy,raphael0202/spaCy,spacy-io/spaCy,recognai/spaCy,honnibal/spaCy,spacy-io/spaCy,aikramer2/spaCy,honnibal/spaCy,aikramer2/spaCy,recognai/spaCy,explosion/spaCy,spacy-io/spaCy,raphael0202/spaCy,recognai/spaCy,recognai/spaCy,explosion/spaCy,explosion/spaCy,aikramer2/spaCy,spacy-io/spaCy,aikramer2/spaCy,honnibal/spaCy,raphael0202/spaCy,recognai/spaCy,raphael0202/spaCy,recognai/spaCy,aikramer2/spaCy,aikramer2/spaCy