Updated dependencies
typo fix.
Merge branch 'master' of github.com:operasoftware/extension-docs
Small change in tabs documentation page

Signed-off-by: Shwetank Dixit <emailshwetank@gmail.com>
Merge pull request #79 from shwetank/master

Small change in tabs documentation page
added line about ads in content scripts
Merge branch 'master' of github.com:operasoftware/extension-docs