integrate_platform 1.0.2

Cross-platform [Platform] and File Management Just use [IntegratePlatform].

1.0.2

• fix bug for writeFile in web

1.0.1

• Update description.

1.0.0

• Initial publishing.
• Use IntegratePlatform instead of Platform to get platform information in io and web.
• Packaged path_provider (In web, you'll get null).
• Packaged File Management. You can read and write a file in io and web.