Use `files` field instead of .npmignore

.npmignore

@@ -1,25 +0,0 @@
-logs
-*.log
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-pids
-*.pid
-*.seed
-*.pid.lock
-lib-cov
-coverage
-.nyc_output
-.grunt
-bower_components
-.lock-wscript
-node_modules/
-jspm_packages/
-typings/
-.npm
-.eslintcache
-.node_repl_history
-*.tgz
-.yarn-integrity
-.env
-_ignore/

package.json

@@ -29,6 +29,10 @@
 		"url": "https://github.com/bs-community/skinview3d/issues"
 	},
 	"homepage": "https://github.com/bs-community/skinview3d",
+	"files": [
+		"types",
+		"build"
+	],
 	"dependencies": {
 		"three": "^0.92.0"
 	},