added more variable documentation to README. added support for platform-agnostic config changes using top-level <config-file> element. add support for wildcard xpath selectors in xml helpers. added tests for prune/graftXML helper methods. factored out common parent resolution from xml helper methods. factored out common post-install prepare steps from install module.
0.6.2 version bump
updates to spec regarding config-file elements.
CB-3284 moving assets to install/uninstall
CB-3215 added ability to use zip archives from local/remote sources
updated plugin spec to note that js-module and asset elements can be nested under platform elements.
deleting unused and useless things