Merge pull request #264 from PGScatalog/docs_version

Add information about versions

docs/how-to/change_version.rst

@@ -0,0 +1,21 @@
+.. _version:
+
+How do I change the version or update `pgsc_calc`?
+==================================================
+
+If you would like to use a specific version of `pgsc_calc` and are running
+the pipeline using our Github repository you can use some of the default nextflow
+parameters (see `-r command docs <https://www.nextflow.io/docs/latest/sharing.html#handling-revisions>`_).
+To run a specific version:
+
+.. code-block:: console
+
+    nextflow run pgscatalog/pgsc_calc -profile <docker/singularity/conda> -r [version name, e.g. v2.0.0-alpha.5] ....
+
+
+To run the latest version of a previously cloned repository you can use `nextflow pull` or add the `-latest` flag to
+a run command (see `nextflow docs <https://www.nextflow.io/docs/latest/cli.html#commands`_):
+
+.. code-block:: console
+
+    nextflow run pgscatalog/pgsc_calc -profile <docker/singularity/conda> -latest ....

docs/how-to/index.rst

@@ -52,3 +52,11 @@ Working with complex datasets
 
    copygenomes
    yaml
+
+Other
+-----
+
+.. toctree::
+   :maxdepth: 1
+
+   version