Update readme

README.md

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-# tree_maker
+Python module, derived from PyFPDF, for tree like design layout
+
+Tree method draw_year: Simple year stamps in vertical position and
+progressively horizontally to the left side
+input data >> sorted years by the Tree keys_sorting method:: trees/test_years_simple_layout.pdf
+
+Tree method design_tree: 
+input data >> sorted years by the Tree keys_sorting method:: trees/test_years_tree_layout.pdf
+
+Tree method draw_year_name: Year-name pair stamps in vertical position in a
+branching layout, work in progress
+input data >> sorted years by the Tree keys_sorting method:: trees/test_year_name_pair_layout.pdf
+
+Tree method draw_year_name_reddit, work in progress: 
+branching sorted year followed by trees named that year on the left side and reddit blog titles related to those trees on the right side
+input data >> Dictionary of sorted years as keys, and a list of tree family names and tree scientific names as values. Intersecting with a dict of same tree family names as keys and tree family names as values.
 
-Python module, derived from PyFPDF, for tree like design layout