Update and simplify installation instructions in Readme.md

Change-Id: I5b621868db66f8dbc8a72b57ea28a6ecde6b1379
diff --git a/Readme.md b/Readme.md
index 9cd154d..035882e 100644
--- a/Readme.md
+++ b/Readme.md
@@ -14,8 +14,8 @@
 via [rpy2](https://rpy2.github.io/). The latter also automatically translates between R data frames (or [tibbles](https://tibble.tidyverse.org/)) and [pandas DataFrames](https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.html). 
 
 ## Installation
-#### 1. Install R (version >= 3.5)
-From [CRAN](https://cran.r-project.org/bin/) or, alternatively, on some recent Linux distributions: 
+#### 1. Install latest R version from [CRAN](https://cran.r-project.org/bin/)
+or, alternatively, on some recent Linux distributions:
 
 ```shell script
 #### Debian / Ubuntu
@@ -24,21 +24,24 @@
 #### Fedora / CentOS / RHEL
 sudo yum install -y R R-devel libcurl-devel openssl-devel libxml2-devel libsodium-devel python3-pandas
 ```
-#### 2. Windows only: Point environment variables to your R installation, e.g.:
-```
-set R_HOME="C:Program Files\R\R-4.1.1"
-set R_USER=%R_HOME%
-set PATH=%R_HOME%\bin;%R_HOME%\bin\x64;%PATH%
-```
 
-#### 3. Install the R package
+#### 2. Install the RKorAPClient package
+Start R and run:
+```R
+install.packages('RKorAPClient', repos='https://cloud.r-project.org/')
 ```
-Rscript -e "install.packages('RKorAPClient', repos='https://cloud.r-project.org/')"
-```
-#### 4. Install the Python package
-```
+or install RKorAPClient from the package installation menu entry.
+#### 3. Install the Python package
+On Linux an MacOs:
+```shell script
 python3 -m pip install KorAPClient
 ```
+
+On Windows:
+```shell script
+py -m pip install KorAPClient
+```
+
 ## Documentation
 The core classes and methods to access the KorAP API are documented in the [KorAPClient API documentation](https://korap.github.io/PythonKorAPClient/doc/KorAPClient/).
 For additional, mostly static helper functions, please refer to the [Reference Manual of RKorAPClient](https://cran.r-project.org/web/packages/RKorAPClient/RKorAPClient.pdf) for now.