Added Makefile

Makefile

+GRUNT = grunt
+GRUNT_FLAGS = --no-color -v
+
+OUTPUT_DIR = build
+OUTPUT = $(OUTPUT_DIR)
+
+WEBAPPS_DIR = web-apps
+WEBAPPS = $(OUTPUT)/$(WEBAPPS_DIR)
+GRUNT_FILES = web-apps/sdkjs/build/deploy/Gruntfile.js.out web-apps/build/Gruntfile.js.out
+
+all: $(WEBAPPS)
+
+$(WEBAPPS): $(GRUNT_FILES)
+	mkdir -p $(OUTPUT)/$(WEBAPPS_DIR) && \
+		cp -r -t $(OUTPUT)/$(WEBAPPS_DIR) $(WEBAPPS_DIR)/deploy/** 
+
+$(GRUNT_FILES):
+	cd $(@D) && \
+		npm install && \
+		$(GRUNT) $(GRUNT_FLAGS)
+	echo "Done" > $@
+	
+clean:
+	rm -f $(GRUNT_FILES)
\ No newline at end of file