chore: redirect main export

Author: Nytelife26

package.json

@@ -3,7 +3,7 @@
   "version": "1.1.2",
   "description": "JavaScript sprintf implementation",
   "author": "Alexandru Mărășteanu <[email protected]>",
-  "main": "src/sprintf.js",
+  "main": "dist/sprintf.min.js",
   "files": [
     "dist"
   ],
@@ -18,7 +18,6 @@
     "url": "https://github.com/alexei/sprintf.js.git"
   },
   "license": "BSD-3-Clause",
-  "readmeFilename": "README.md",
   "devDependencies": {
     "benchmark": "^2.1.4",
     "eslint": "^5.10.0",