update documentation grammar typo

a couple methods in matchers.rb have a small typo, which propagate up to the auto-generated YARD doc.
Merge pull request #1126 from dguzzo/patch-1

update documentation grammar typo
Added #inspect to the delegators
Merge pull request #1127 from srawlins/change_inspect_on_result

Added #inspect to the delegators
hover now works in firefox
Merge pull request #1137 from twalpole/hover_test

hover test now passes with selenium on travis