Tokenization of URLs needs work #344

In [3]: nlp = English()

In [4]: doc = nlp("Do you agree that this is a URL: http://www.nytimes.com/2016/04/20/us/politics/new-york-primary-preview.html?hp&action=click&pgtype=Homepage&clickSource=story-heading&module=a-lede-package-region&region=top-news&WT.nav=top-news&_r=0")

In [5]: [s.lemma_.lower() for s in doc if not s.like_url]
Out[5]:
['do',
 'you',
 'agree',
 'that',
 'this',
 'be',
 'a',
 'url',
 ':',
 '-',
 'york-primary-preview.html?hp&action=click&pgtype=homepage&clicksource=story-heading&module=a-lede-package-region&region=top-news&wt.nav=top-news&_r=0']