Fixed README

README.md

@@ -8,10 +8,10 @@ models and reactive transport in the framework of the RedMod project.
 In R, the quickest way is to install the package `devtools` and
 install RedModRphree directly from this repository:
 
-```R
+```
 library(devtools)
 devtools::install_git("https://gitext.gfz-potsdam.de/delucia/RedModRphree.git")
-```R
+```
 
 
 To install in a specific directory (which R must know about, e.g.,
@@ -21,7 +21,7 @@ specifying the variable R_LIBS_USER in the file `$HOME/.Renviron`:
 R_LIBS_USER="~/MyRPackageDir"
 ```
 then:
-```R
+```
 devtools::install_git("https://gitext.gfz-potsdam.de/delucia/RedModRphree.git", lib="~/MyRPackageDir")
 ```
 This should take care of (mostly) all dependencies.