Use the dev version in Makefile

Makefile

@@ -3,10 +3,10 @@ default: update
 update: compile update-readme update-latest
 
 update-latest:
-	./youtube-dl --version > LATEST_VERSION
+	./youtube-dl.dev --version > LATEST_VERSION
 
 update-readme:
-	@options=$$(COLUMNS=80 ./youtube-dl --help | sed -e '1,/.*General Options.*/ d' -e 's/^\W\{2\}\(\w\)/### \1/') && \
+	@options=$$(COLUMNS=80 ./youtube-dl.dev --help | sed -e '1,/.*General Options.*/ d' -e 's/^\W\{2\}\(\w\)/### \1/') && \
 		header=$$(sed -e '/.*## OPTIONS/,$$ d' README.md) && \
 		footer=$$(sed -e '1,/.*## FAQ/ d' README.md) && \
 		echo "$${header}" > README.md && \