[#13] Add PhoneGap-specific template assets.
assertion: PG CLI can remotely build symbian/webos
minor: link in overview to Cordova
minor: clarify CLI stubs in overview tbl
minor: no parens needed in cell when no check/X marks are present
CLI row comes first; local/remote options are subordinate
CLI doesn't support pre-bb10, so supported dev OS irrelevant
Brian says no Symbian/WebOS support for plugin UI, inAppBrowser, Capture, Global, Spash