remove aliases for _.each and _.some
test node 0.10.x version on travis and update phantomjs version.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
Merge pull request #1529 from appleboy/patch

test on node 0.10.x version and update phantomjs version
reference "filter" rather than its alias, "select"
Merge pull request #1531 from davidchambers/replace-alias

reference "filter" rather than its alias, "select"
Merge pull request #1528 from davidchambers/remove-aliases

remove aliases for _.each and _.some
clarify isEmpty in docs
Merge branch 'master' of https://github.com/jashkenas/underscore