remove extra Makefil in R/metadata

R/metadata/Makefile

-SITES := BCI Canada France Fushan NSW NVS Paracou Spain Sweden Swiss US 
-OBJDIR := ../../docs/metadata/sites
-OBJS := $(addsuffix .md, $(addprefix $(OBJDIR)/, $(SITES))) 
-     
-all: $(OBJS)
-
-%.md:
-	Rscript knit_site_description.R $@
-	
-.PHONY: all 

docs/Makefile

-all: analysis agenda
+all: analysis agenda metadata
 	
 analysis:
 	make -C analysis.plan
@@ -6,4 +6,10 @@ analysis:
 agenda:
 	make -C meeting.agenda
 
+metadata:
+	make -C metadata
+	
+clean:
+	
+	
 .PHONY: all base metadata clean

docs/metadata/Makefile

@@ -5,7 +5,7 @@ PDF := $(addsuffix .pdf, $(addprefix sites/, $(SITES)))
 all: $(MD) $(PDF) sites/all.pdf
 
 $(MD):
-	make -C ../../R/metadata	
+	cd ../../R/metadata; Rscript knit_site_description.R $(addprefix ../../docs/metadata/, $@)
 
 sites/all.md: $(MD)
 	cat $(MD) > sites/all.md