Merge pull request #2 from cmu-delphi/lcb/installation

Expand on installation, update DESCRIPTION, add renv

Author: brookslogan

.Rprofile

@@ -0,0 +1 @@
+source("renv/activate.R")

DESCRIPTION

@@ -10,15 +10,16 @@ Description:
   | This book is a longform introduction to analysing and forecasting epidemiological data.
 License: MIT + file LICENSE
 Imports:
-    covidcast,
     epidatr,
     epipredict,
     epiprocess,
-    hardhat,
+    modeldata,
     ranger,
+    tidyverse,
     xgboost
 Suggests:
-    servr
+    quarto,
+    styler
 Remotes:
     cmu-delphi/epidatr,
     cmu-delphi/epiprocess@dev,