Update README.md

Author: perazz

README.md

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 # fortran-lapack
 This package provides precision-agnostic, high-level linear algebra APIs for `real` and `complex` arguments in Modern Fortran. The APIs are similar to NumPy/SciPy operations, and leverage a Modern Fortran implementation of the [Reference-LAPACK](http://github.com/reference-LAPACK) library.
 
+A full and standardized implementation of the present library has been integrated into the [Fortran Standard Library](http://stdlib.fortran-lang.org/), and as such, most users should seek to access the functionality from `stdlib`. The present library is kept in place for those who seek a compact implementation of it.
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 # Current API
 
 [The documentation site](https://perazz.github.io/fortran-lapack/index.html) contains full documentation for the library.