Create Makefile with necessary recipe

Makefile

@@ -0,0 +1,34 @@
+.PHONY: main
+
+main: clean bundle installer
+
+install:
+	@echo "Opening installer..."
+	@open "build/KhmerUnicodeInstaller/Khmer Unicode Installer.pkg"
+
+bundle:
+	@echo "Building Khmer Unicode Keyboard [Bundle]\n"
+	@xcodebuild -project src/KhmerUnicode.xcodeproj \
+				-scheme "[Release] KhmerUnicode" \
+				build
+
+installer:
+	@echo "Building Khmer Unicode Keyboard [Installer]\n"
+	@echo "Copying KhmerUnicode.bundle..."
+	@cp -r "build/KhmerUnicode/Build/Products/Release/KhmerUnicode.bundle" \
+		"Library/Keyboard Layouts"
+	@mkdir build/KhmerUnicodeInstaller
+	@/usr/local/bin/packagesbuild \
+		--verbose \
+		./Packages.pkgproj
+
+clean:
+	@echo "Cleaning up..."
+	@echo "Removing build/KhmerUnicode directory..."
+	@rm -rf "build/KhmerUnicode"
+	@echo "Removing build/KhmerUnicodeInstaller directory..."
+	@rm -rf "build/KhmerUnicodeInstaller"
+	@echo "Removing build/ModuleCache.noindex directory..."
+	@rm -rf "build/ModuleCache.noindex"
+	@echo "Removing Library/Keyboard Layouts/KhmerUnicode.bundle from project..."
+	@rm -rf "Library/Keyboard Layouts/KhmerUnicode.bundle"