pagination for people now working, closes #17
added tests for calendar and people pagination, updated README with example repos and test commands
Update README.md
remove host if host in url
added pdfminer install from source to requirements.txt
Handle event keys that are not present

When scraping Chicago events, I found 'Minutes'
was not present.
Merge pull request #25 from walter/patch-1

Handle event keys that are not present
Handle when css selector is not present

ctl00$ButtonRSS not in Chicago Calendar.aspx pages

Haven't tested again Philadelphia.
Merge pull request #27 from walter/patch-3

Handle when css selector is not present