Update installation instructions for Linux
Thanks @Rainer
Tested on a fresh Ubuntu 20.04 LTS install.
Change-Id: Ia820a621bfd4e6b3d1ff5313e443841886c2b59a
diff --git a/Readme.md b/Readme.md
index 1e5918c..d589264 100644
--- a/Readme.md
+++ b/Readme.md
@@ -22,13 +22,13 @@
`RKorAPClient` uses some R packages with system dependencies you might need to install first:
```bash
#### Debian / Ubuntu
-sudo apt install r-base-dev libcurl4-gnutls-dev libxml2-dev libsodium-dev
+sudo apt install r-base-dev libcurl4-gnutls-dev libxml2-dev libsodium-dev libsecret-1-dev libfontconfig1-dev libssl-dev
#### Fedora / CentOS >= 8 / RHEL >= 8
-sudo dnf install R-devel libcurl-devel openssl-devel libxml2-devel libsodium-devel
+sudo dnf install R-devel libcurl-devel openssl-devel libxml2-devel libsodium-devel libsecret-devel fontconfig-devel
#### CentOS < 8 / RHEL < 8
-sudo yum install R-devel libcurl-devel openssl-devel libxml2-devel libsodium-devel
+sudo yum install R-devel libcurl-devel openssl-devel libxml2-devel libsodium-devel libsecret-devel fontconfig-devel
#### Arch Linux
pacman -S base-devel gcc-fortran libsodium curl