Update README.md

Author: flaxter

README.md

@@ -1,17 +1,17 @@
 ![](https://github.com/ImperialCollegeLondon/covid19model/workflows/CI/badge.svg)
 
 # covid19model
-Code for modelling estimated deaths and infections for COVID-19 from ["Estimating the effects of non-pharmaceutical interventions on COVID-19 in Europe"](https://www.nature.com/articles/s41586-020-2405-7), Flaxman, Mishra, Gandy et al, Nature, 2020.
+Code for modelling estimated deaths and infections for COVID-19 from ["Estimating the effects of non-pharmaceutical interventions on COVID-19 in Europe"](https://www.nature.com/articles/s41586-020-2405-7), Flaxman, Mishra, Gandy et al, Nature, 2020, the published version of our original [Report 13](https://www.imperial.ac.uk/mrc-global-infectious-disease-analysis/covid-19/report-13-europe-npi-impact/).
 
 If you are looking for the individual based model used in Imperial's [Report 9, Ferguson, Laydon, Nedjati-Gilani et al](https://www.imperial.ac.uk/mrc-global-infectious-disease-analysis/covid-19/report-9-impact-of-npis-on-covid-19/), please look [here](https://github.com/mrc-ide/covid-sim).
 
 ## Version 7 Release
 
-This code is the exact code that was used in Flaxman, Mishra, Gandy et al. "Estimating the effects of non-pharmaceutical interventions on COVID-19 in Europe," Nature, 2020.[https://www.nature.com/articles/s41586-020-2405-7](https://www.nature.com/articles/s41586-020-2405-7)
+This code is the exact code that was used in Flaxman, Mishra, Gandy et al. "Estimating the effects of non-pharmaceutical interventions on COVID-19 in Europe," Nature, 2020. [https://www.nature.com/articles/s41586-020-2405-7](https://www.nature.com/articles/s41586-020-2405-7)
 
-To run the code from the main folder in rstudio source base-nature.r or from terminal after reaching the root of the repository type Rscript base-nature.r.
+To run the code from the main folder in Rstudio ``source("base-nature.r")`` or from the command line ``Rscript base-nature.r``.
 
-The code should be run in full mode to obtain any results. Not running full model to estimate anything is not recommended and discouraged. Only full run should be used to get results.
+The code should be run in full mode to obtain results---debug mode is only to check that your environment has the required libraries; results will not be reliable as the MCMC chains will not have converged.
 
 The repository with posterior draws of the model in Flaxman, Mishra, Gandy et al. "Estimating the effects of non-pharmaceutical interventions on COVID-19 in Europe," Nature, 2020. [https://www.nature.com/articles/s41586-020-2405-7](https://www.nature.com/articles/s41586-020-2405-7) is [here](https://github.com/ImperialCollegeLondon/covid19modelnaturedraws).