build(npmignore): tweaked .npmignore and changed package entry point

Author: meszaros-lajos-gyorgy

Diff for: .npmignore

@@ -1,4 +1,5 @@
 .eslintrc
 .babelrc
 src/**/*
-rollup.config.js
+rollup.config.js
+.travis.yml

Diff for: package.json

@@ -2,7 +2,7 @@
   "name": "audioparam-getvalueattime",
   "version": "0.0.0-development",
   "description": "This code monkey patches AudioParams with a method to get values at any time",
-  "main": "src/index.js",
+  "main": "dist/audioparam-getvalueattime.min.js",
   "scripts": {
     "build": "rollup -c",
     "build:watch": "npm run build -- --watch",