chore: only include source code when publish to npm

.gitignore

@@ -3,6 +3,7 @@
 .settings/
 
 # Dev dependencies and cache files
+dist/
 node_modules/
 npm-debug.log
 
@@ -18,5 +19,3 @@ Thumbs.db
 # Files that might appear on external disks
 .Spotlight-V100
 .Trashes
-
-dist/

package.json

@@ -4,7 +4,7 @@
   "description": "赫蹏是专为中文内容展示设计的排版样式增强。它基于通行的中文排版规范而来，可以为网站的读者带来更好的文章阅读体验。",
   "main": "lib/heti.scss",
   "files": [
-    "dist/"
+    "lib"
   ],
   "directories": {
     "lib": "lib"