[NF] corpse.obj.Database Has Been Updated
 - Database object has been converted from shelve to cpickle.
 - Database.__constructor__()
 - Database.push()
 - Database.close()
 - Database.appendText(), Database.appendToken, Database.appendTag()
 - Database.removeText(), Database.removeToken, Database.removeTag()
 - Database.getText(), Database.getToken(), Database.getTag()
 - Readme has been updated and some tests have been added.