Changed module imports to be complient with PEP 8; added notes to getTree and treeExists describing other ways of handling global module stuff and the idea that these may be removed.
Changed module imports to be complient with PEP 8; added notes to getTree and treeExists describing other ways of handling global module stuff and the idea that these may be removed.

hoytak/treedict,hoytak/treedict,hoytak/treedict