Add fullscreen, deploy automation, versioning.

Makefile

@@ -0,0 +1,7 @@
+deploy:
+	-rm -r dist
+	mkdir dist
+	cp flashcards.* dist
+	git describe --always --tags | xargs --replace=INSERTED -- sed -i -e 's/%VERSION%/INSERTED/' dist/*
+	aws s3 sync dist s3://flashcards.jdbernard.com
+	rm -r dist