added JS merger

Makefile

@@ -8,9 +8,11 @@ SNAKE = public/assets/snake.json
 
 CSS = public/css/snek.css
 
-OUTPUT = $(ICON) $(APPLE) $(WALL) $(SNAKE) $(CSS)
+JS = public/js/snek.js
 
-all: icon css apple wall snake
+OUTPUT = $(ICON) $(APPLE) $(WALL) $(SNAKE) $(CSS) $(JS)
+
+all: icon apple wall snake css js
 icon: $(ICON) 
 apple: $(APPLE)
 wall: $(WALL)
@@ -19,6 +21,8 @@ snake: $(SNAKE)
 
 css: $(CSS)
 
+js: $(JS)
+
 public/assets/icon32.png: assets/icon.jpg
 	convert $^ -resize 32x $@
 public/assets/icon256.png: assets/icon.jpg
@@ -35,8 +39,11 @@ public/assets/wall32.png: assets/wall.png
 public/assets/snake.json: assets/snake.json
 	cp $^ $@
 
-public/css/snek.css: src/less/snek.less
-	lessc $^ $@
+public/css/snek.css: src/less/snek.less $(wildcard src/less/*.less)
+	lessc $< $@
+
+public/js/snek.js: $(wildcard src/js/*.js)
+	node mergejs.js $^ > $@
 
 clean:
 	rm -f $(OUTPUT)