Update LICENSE.txt copyright date.

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk/cef3@1869 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
Add support for DevTools inspect element via a new |inspect_element_at| parameter added to CefBrowserHost::ShowDevTools (issue #586).

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk/cef3@1870 5089003a-bbd8-11dd-ad1f-f1f9622dbc98