Rel 0.0.2 - Added croaches example and updated README.

Author: goedman

README.md

@@ -7,6 +7,33 @@
 These files implement Pareto smoothed importance sampling (PSIS) and
 PSIS leave-one-out cross-validation for Julia base on the [Matlab package called `PSIS` by Aki Vehtari](https://github.com/avehtari/PSIS.git).
 
+### Installation
+
+Once registered, PSIS.jl can be installed with:
+```
+Pkg.dev("PSIS")
+```
+
+A possible setup is to have only a few packages installed, e.g.:
+```
+(@v1.6) pkg> st
+      Status `~/.julia/environments/v1.6/Project.toml`
+  [634d3b9d] DrWatson v1.16.6
+  [44cfe95a] Pkg
+```
+
+To use the demonstration Pluto notebooks, you can add:
+```
+  [c3e4b0f8] Pluto v0.12.18
+  [7f904dfe] PlutoUI v0.6.11
+```
+
+and for occasional access to R datasets:
+```
+  [6f49c342] RCall v0.13.10
+  [ce6b1742] RDatasets v0.7.3
+```
+
 ### Included functions
 
 psisloo