Merge pull request #100 from milancurcic/90-clarify-fpm

add a note about Effing Package Management and elaborate on prototype

Author: milancurcic

README.md

@@ -1,6 +1,16 @@
 # Fortran Package Manager
 
-A prototype version.
+This is the repository of the Fortran Package Manager (fpm).
+If you are looking for the Effing Package Management instead, see
+[jordansissel/fpm](https://github.com/jordansissel/fpm).
+
+Fortran Package Manager is an early prototype.
+You can use it to build and package your Fortran projects, as
+well as to include supported Fortran dependency projects.
+As a prototype, changes to fpm's behavior and inputs may occur as development continues.
+Please follow the [issues](https://github.com/fortran-lang/fpm/issues)
+to contribute and/or stay up to date with the development.
+As the prototype matures and we enter production, we will do our best to stay backwards compatible.
 
 ## Getting started