Adding "driverName" and "driverVersion" to Caps.

A bit of extra info that can help with debugging cases.
Fix: switch to iframe that has no name/id.

Fixes #194.
Implement ".withLog" on PhantomJSDriverService.

Fixes #179.
Handle Proxy config when it's a plain "Map".

Fixes #188.
Generating Java Binding Jars for "1.0.3-dev"