Adding Makefile for easier packaging

Makefile

@@ -0,0 +1,32 @@
+# Makefile for building the project
+
+app_name=contacts
+project_dir=$(CURDIR)/../$(app_name)
+build_dir=$(CURDIR)/build/artifacts
+appstore_dir=$(build_dir)/appstore
+source_dir=$(build_dir)/source
+package_name=$(app_name)
+
+all: dist
+
+clean:
+	rm -rf $(build_dir)
+
+appstore: clean
+	mkdir -p $(appstore_dir)
+	tar cvzf $(appstore_dir)/$(package_name).tar.gz $(project_dir) \
+	--exclude-vcs \
+	--exclude=$(project_dir)/build \
+	--exclude=$(project_dir)/build/artifacts \
+	--exclude=$(project_dir)/js/node_modules \
+	--exclude=$(project_dir)/js/.bowerrc \
+	--exclude=$(project_dir)/.jshintrc \
+	--exclude=$(project_dir)/.jshintignore \
+	--exclude=$(project_dir)/.travis.yml \
+	--exclude=$(project_dir)/.scrutinizer.yml \
+	--exclude=$(project_dir)/phpunit*xml \
+	--exclude=$(project_dir)/Makefile \
+	--exclude=$(project_dir)/tests \
+	--exclude=$(project_dir)/l10n/.tx \
+	--exclude=$(project_dir)/l10n/no-php \
+