Update README.md

Author: mpickem

README.md

@@ -1,15 +1,16 @@
 # HDF5 wrapper
 ## HDF5 Installation
 Download the tar ball from the [official homepage](https://www.hdfgroup.org/downloads/hdf5/source-code/).
-Make sure to always use the latest version (currently: 1.13.0). Older versions (1.8 and below) may result in unintentional problems, especially with non-native datatypes like `logical`.
+Make sure to always use the latest version (currently: 1.12.2). Older versions (1.8 and below) may result in unintentional problems, especially with non-native datatypes like `logical`.
 Installation for e.g. gnu compiler is done via
 
 ```
 tar xf hdf5-x.y.z.tar.gz
 cd hdf5-x.y.z
 CC=gcc
 FC=gfortran
-./configure --enable-fortran --prefix=/opt/hdf5-x.y.z_gcc
+mkdir /home/USER/opt
+./configure --enable-fortran --prefix=/home/USER/opt/hdf5-x.y.z_gcc
 make
 make check
 make install