Fix to to changed pkgdown v1.4 workflow

see: r-lib/pkgdown#1136

.Rbuildignore

@@ -5,7 +5,7 @@
 ^.travis\.yml$
 ^.gitlab-ci\.yml$
 ^appveyor\.yml$
-^index\.Rmd$
+^index\.md$
 ^README\.md$
 ^.*\.Rproj$
 ^\.Rproj\.user$

index.Rmd → index.md

@@ -25,15 +25,15 @@ computing and graphics. You can download it
 
 Run R and install the following packages first:
 
-```{r eval = FALSE}
+```r
 install.packages("remotes")
 install.packages("usethis")
 ```
 
 Then, install kwb.flusshygiene.app directly from [GitHub](https://github.com/) 
 with:
 
-``` r
+```r
 remotes::install_github("KWB-R/kwb.flusshygiene.app")
 ```
 ## Giving access to the servers
@@ -55,7 +55,7 @@ We recommend to set these variables in the `.Renviron` file that is loaded
 automatically when R is started. Use the function `edit_r_environ()` from 
 the usethis package (installed above) to open the `.Renviron` file in an editor:
 
-```{r eval = FALSE}
+```r
 usethis::edit_r_environ()
 ```
 
@@ -79,7 +79,7 @@ Save and close the `.Renviron` file.
 
 Once the environment variables are set you can run the following main script:
 
-```{r eval = FALSE}
+```r
 # Set the root folder below which to expect/create the app's folder structure
 kwb.flusshygiene.app::set_root("~/projekte/flusshygiene/fruehwarnsystem")
 
@@ -97,7 +97,7 @@ that is set to `FALSE` by default. The argument specifies whether to upload the
 result of the daily prediction to the web server of Technologiestiftung Berlin
 (TSB). Set this argument to `TRUE` only if you know what you are doing!
 
-```{r eval = FALSE}
+```r
 kwb.flusshygiene.app::update_data_and_predict(upload = TRUE)
 ```