refactor: use package.json instead of Makefile

Makefile

@@ -1,3 +0,0 @@
-.PHONY: dev
-dev:
-	hugo server -D --disableFastRender --source=exampleSite --themesDir=../.. --theme=holy

package.json

@@ -0,0 +1,19 @@
+{
+  "name": "holy",
+  "version": "0.0.1",
+  "description": "",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "dev": "hugo server -D --disableFastRender --source=exampleSite --themesDir=../.. --theme=holy"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/serkodev/holy.git"
+  },
+  "author": "SerKo (https://github.com/serkodev)",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/serkodev/holy/issues"
+  },
+  "homepage": "https://github.com/serkodev/holy#readme"
+}