Added packaging readme

packaging/README.md

@@ -0,0 +1,32 @@
+# Building releases
+
+* Update CHANGELOG.md
+* Tag the release commit, e.g. ```git tag 0.1.0```
+
+## Ubuntu
+
+```bash
+cd packaging
+make DIST=bionic REBUILD=1 deb
+make DIST=focal REBUILD=1 deb
+make DIST=jammy REBUILD=1 deb
+
+cd _BUILD/ubuntu/bionic
+dput ppa:bkryza/clang-uml *.changes
+
+cd _BUILD/ubuntu/focal
+dput ppa:bkryza/clang-uml *.changes
+
+cd _BUILD/ubuntu/jammy
+dput ppa:bkryza/clang-uml *.changes
+
+```
+
+## Anaconda
+
+```bash
+docker run --rm -v $PWD:$PWD continuum/miniconda3 bash
+conda install conda-build
+cd packaging
+make conda
+```