Provide a way for the Wonder Frameworks to report their version code. The actual String version is plucked from the "CFBundleShortVersionString" value in the ERExtensions framework's "Info.plist" file. In addition to providing the static method ERXProperties.wonderVersion(), the Property "er.extensions.version" is also set to the same value. Since this method first appears in version "6.0.1" of Wonder, a failure to determine a version is reported as version "6.0.0".