Updating travis config to test against 0.10.x as well as 0.6.x and 0.8.x.
Updating travis config to test against 0.10.x as well as 0.6.x and 0.8.x.

Added new line

Using quotes to match what travis-ci contributor mentions in
travis-ci/travis-ci#978

cheeriojs/cheerio,cheeriojs/cheerio