Update methods.md

Update README.md

xml with differences from previous version sxn

fix spelling error

add differences from previous version sxn

update README

Delete .Rhistory

Merge branch 'master' of https://github.com/WHOIGit/nes-lter-nutrient into master

update github link in methods

commit excel files as binary

update input data, rename date column

edit methods

rename cruise col, convert txt to md

edit parameter definitions

delete old v1 files