Fix installation of mixin runtime

Mixin runtimes are now installed to ~/.porter/mixins/MIXIN/runtimes/MIXIN-runtime.

Signed-off-by: Carolyn Van Slyck <[email protected]>

Author: carolynvs

Diff for: Makefile

@@ -98,9 +98,9 @@ bin/porter$(FILE_EXT):
 	chmod +x bin/porter$(FILE_EXT)
 
 install:
-	mkdir -p $(PORTER_HOME)/mixins/$(MIXIN)
+	mkdir -p $(PORTER_HOME)/mixins/$(MIXIN)/runtimes
 	install $(BINDIR)/$(MIXIN)$(FILE_EXT) $(PORTER_HOME)/mixins/$(MIXIN)/$(MIXIN)$(FILE_EXT)
-	install $(BINDIR)/$(MIXIN)-runtime$(FILE_EXT) $(PORTER_HOME)/mixins/$(MIXIN)/$(MIXIN)-runtime$(FILE_EXT)
+	install $(BINDIR)/$(MIXIN)-runtime$(FILE_EXT) $(PORTER_HOME)/mixins/$(MIXIN)/runtimes/$(MIXIN)-runtime$(FILE_EXT)
 
 clean: clean-packr
 	-rm -fr bin/