adds the ability to filter client#topPage

allows client#topPage to filter to response statuses, and other filters supported
by the linkscape api.
adds to gitignore
gets rid of debug code in test
put these cassettes back to the way they were.
asserts that we can filter on two different status codes with different outcomes
Merge pull request #8 from seomoz/add-filter-flag-to-top-pages

Add filter flag to top pages