add python for updating chat bubble.

Makefile

@@ -0,0 +1,16 @@
+PYTHON=.venv/bin/python
+
+.PHONY: build install
+
+install: requirements.txt
+	$(PYTHON) -m pip install -r $^
+
+build: build-svg.py template.svg
+	$(PYTHON) $<
+	git add '*.svg' && \
+	GIT_AUTHOR_NAME='publicmatt' GIT_AUTHOR_EMAIL='git@publicmatt.com' \
+	GIT_COMMITTER_NAME='publicmatt' GIT_COMMITTER_EMAIL='git@publicmatt.com' \
+	git commit -m "Auto-updating git readme"
+	git push publicmatt
+	git push github
+