update readme todo

complete predictive, update code (cleaned)

update inferential to use data up to 2010, not 2017

reorganise inf feature code

update inferential.md to include std coef

add standardised coefs to inferential code, figs

add predictive methods

add references doc

Fix relative link in inferential.md

Fix inferential.md relative link in predictive.md

Add predictive.md intro

Update future work in inferential doc

update README to do list

add inferential explanation

update inf model code with marginal effects