added work on get average yield

README.md

@@ -1,11 +1,14 @@
 # how to run it
 * poetry install
-* poetry run python main.py
+* poetry run python main.py (get monthly optimal yield with trading off between capital efficiency and imp loss)
+* poetry run python main_avg_yld.py (range to get average yeild)
 
 # detail
-methodology explanation can be found in medium article: https://medium.com/@xben12/defi-decode-liquidity-mining-yield-impermanent-loss-and-set-optimal-range-e20c3472d2bb
+methodology explanation can be found in medium article: 
+* https://medium.com/@xben12/defi-decode-liquidity-mining-yield-impermanent-loss-and-set-optimal-range-e20c3472d2bb
+* 
 
 Code: 
-* main: main.py
+* main: main.py, main_avg_yld.py
 * data: use library_data.py. This file will pre save data into csv in the output folder.
 * logic (imp loss, range, coverage %): library_logic.py