Update installation instructions

README.Rmd

@@ -46,12 +46,22 @@ _{{ packagename }}_ is developed at the [Centre for the Mathematical Modelling o
 
 The latest development version of the _{{ packagename }}_ package can be installed via
 
-```{r install_pkg, include=TRUE,eval=FALSE}
+```{r install_with_remotes, include=TRUE,eval=FALSE}
+# check whether {remotes} is installed
+if (!require("remotes")) install.packages("remotes")
+remotes::install_github("{{ gh_repo }}")
+```
+
+If this fails, try using the `pak` R package via
+
+```{r install_with_pak, include=TRUE,eval=FALSE}
 # check whether {pak} is installed
 if (!require("pak")) install.packages("pak")
 pak::pak("{{ gh_repo }}")
 ```
 
+If both of these options fail, please [file an issue](https://github.com/epiverse-trace/epichains/issues) with a full log of the error messages. Here is an [example of an issue reporting an installation failure](https://github.com/epiverse-trace/epichains/issues/262). This will help us to improve the installation process.
+
 To load the package, use
 
 ```{r load_pkg, eval=TRUE}