[DOC release] finish example for aliasMethod
Merge pull request #5035 from knownasilya/aliasmethod-doc

[DOC release] Finish example for aliasMethod
exposed wrapMap on Ember._metamorphWrapMap for better extensibility enabling SVG support
Merge pull request #5038 from blesh/metamorph_wrapmap_exposure

exposed wrapMap on Ember._metamorphWrapMap