cosmetic edits.
started 'methods' section of thesis.
reorganized thesis to reflect parent-child document structure.
added implementation overview -- need to finish it.
made flow charts to demonstrate implementation of boost/boostr.
updated notation in boostFlowchart to match that in preliminaries subsection of Introduction.
started introduction and ``generalizing adaboost to boost'' sections.
updated all the figures to have position [htbp].
restructured introduction.Rnw to be split into two separate .Rnw's.
added Mark and Sandrine's 2005 paper to bibliography.
continued to add to adaboost_to_boost.