Merge pull request #39 from sourceryinstitute/udpate-readme

Update README.md to reflect changes since forking

Author: Damian Rouson

README.md

@@ -1,8 +1,16 @@
 Overview
 ========
 
-DAG is a Fortran 2018 library for creating and manipulating directed acyclic graphs (DAGs).
-It includes a topological sort feature, and it generates files in the [GraphViz] "dot" format.
+DAG is a Fortran 2018 library for creating and manipulating directed acyclic graphs (DAGs).  DAG is based on a fork of [daglib by Jacob Williams], refactored to add
+
+* A build system and test harness automated by [fpm],
+* Unit testing written with [Vegetables], 
+* Continuous-integration testing and documentation deployment via [GitHub Actions], 
+* Documentation generated by [FORD], 
+* Runtime assertion-checking using [Sourcery], and
+* [JSON] file input/output using [jsonff].  
+
+DAG includes a topological sort feature, and it generates files in the [GraphViz] "dot" format.
 
 Prerequisites
 -------------
@@ -17,22 +25,18 @@ Earlier versions might work also.
 
 Building and testing
 --------------------
-To clone, build, and test, execute the following in a `bash` shell:
+After installing [fpm], clone, build, and test, execute the following in a `bash`-like shell:
 ```
 git clone git@github.com:sourceryinstitute/dag
 fpm test --compiler caf --runner "cafrun -n 1"
 ```
 replacing `1` in the last line with the desired number of images to execute in parallel for
 each test.  Please report any test failures by submitting an [issue] on the DAG repository.
 
-Users who prefer a [FoBiS] build system, please see [daglib by Jacob Williams],
-from which the current repository was forked.
-
 Example
 -------
 
 The [jacob-example] test provides a short example of the use of dag, including checks
-
 for the expected results.  That test also writes the following image to a `.pdf` file:
 
 <img src="https://user-images.githubusercontent.com/13108868/99005591-f0c59480-24f5-11eb-96a3-c5416f197360.png" width="500">
@@ -43,12 +47,18 @@ License
 This library is released under a [BSD-3 license].
 
 [daglib by Jacob Williams]: https://github.com/jacobwilliams/daglib
-[FoBiS]: https://github.com/szaghi/FoBiS
 [GraphViz]: https://www.graphviz.org
 [jacob-example]: https://github.com/sourceryinstitute/dag/blob/master/tests/integration/jacob-example/test-jacob-example.f90
 [OpenCoarrays]: https://github.com/sourceryinstitute/opencoarrays
 [CMake]: https://www.cmake.org
 [gfortran]: https://gcc.gnu.org
 [BSD-3 license]: https://github.com/sourceryinstitute/dag/blob/master/LICENSE
-[fpm]: https://github.com/everythingfunctional/fpm
+[fpm]: https://github.com/fortran-lang/fpm
 [3276af]: https://github.com/everythingfunctional/fpm/commit/3276af2e000d1b2c90f151148cd01cce0d3e886d
+
+[Vegetables]: https://gitlab.com/everythingfunctional/Vegetables
+[GitHub Actions]: https://github.com/features/actions
+[FORD]: https://github.com/Fortran-FOSS-Programmers/ford
+[Sourcery]: https://github.com/Fortran-FOSS-Programmers/ford
+[JSON]: https://www.json.org/json-en.html
+[jsonff]: https://gitlab.com/everythingfunctional/jsonff