Add muse to makefile

makefile

 FOLDERS=mu-e-scattering/muone \
+        l-p-scattering/muse \
         radiative-lepton-decay/babar/example \
-		michel-decay/validation michel-decay/demo-observable michel-decay/f-and-g
+        michel-decay/validation michel-decay/demo-observable michel-decay/f-and-g
 
 all:
 	for i in $(FOLDERS) ; do make -C $$i all ; done

tools/makefile.conf

@@ -32,7 +32,7 @@ $(figures): $(name).ipynb
 all: $(name).html $(figures)
 
 clean:
-	rm -f *.ipynb *.pdf *.png *.html *.tex *.pgf *.pyc
+	rm -rf *.ipynb *.pdf *.png *.html *.tex *.pgf *.pyc .ipynb_checkpoints
 
 check:
 	@res=$$(find . -name "*.py" -exec $(PEP8) $(PEP8FLAGS) {} \;) ; \