Makefile: Do not force making README.html

This forces us to depend on markdown which would be otherwise optional.
Most of the time it is sufficient to let package managers just install
the README.md file.

Signed-off-by: Kai Krakow <kai@kaishome.de>

Makefile

@@ -22,8 +22,9 @@ include Defines.mk
 
 default: $(DEFAULT_MAKE_TARGET)
 
-all: lib src scripts README.html
-reallyall: all test
+all: lib src scripts
+docs: README.html
+reallyall: all docs test
 
 clean: ## Cleanup
 	git clean -dfx -e localconf
@@ -76,5 +77,5 @@ install: install_bees install_scripts $(OPTIONAL_INSTALL_TARGETS)
 help: ## Show help
 	@fgrep -h "##" $(MAKEFILE_LIST) | fgrep -v fgrep | sed -e 's/\\$$//' | sed -e 's/##/\t/'
 
-bees: all
+bees: reallyall
 fly: install