Add a contributing section to the README and simplify package addition

1 files changed, 16 insertions, 0 deletions

diff --git a/README.md b/README.md
index 2a496d5..c3e4e93 100644
--- a/README.md
+++ b/README.md
@@ -322,6 +322,22 @@ You can change the generated releases location by setting
 the `RELX_OUTPUT_DIR` variable. Any other option should go
 in the `RELX_OPTS` variable.
 
+Contributing
+------------
+
+You can contribute by providing feedback, creating patches,
+adding packages to the index or new features as plugins.
+
+For packages, you only need to edit the `packages.v2.tsv`
+file, adding your package (they are sorted alphabetically),
+and then running `make` to update the older files kept for
+compatibility reasons.
+
+For patches or plugins, you have to edit the `core/*.mk`
+or `plugins/*.mk` files and then run `make` to create an
+updated `erlang.mk`. If you submit a new plugin, you also
+need to add it to the `build.config` file.
+
 Support
 -------