Revert "Add platform interface"

Author: mvanbeusekom

CONTRIBUTING.md

@@ -36,8 +36,8 @@ We really appreciate contributions via GitHub pull requests. To contribute take
    * `git checkout upstream/develop -b <name_of_your_branch>`
  * Apply your changes
  * Verify your changes and fix potential warnings/ errors:
-   * Check formatting: `dart format .`
-   * Run static analyses: `flutter analyze`
+   * Check formatting: `flutter format .`
+   * Run static analyses: `flutter analyzes`
    * Run unit-tests: `flutter test`
  * Commit your changes: `git commit -am "<your informative commit message>"`
  * Push changes to your fork: `git push origin <name_of_your_branch>`

example/pubspec.yaml

@@ -1,7 +1,6 @@
 name: google_api_availability_example
 description: Demonstrates how to use the google_api_availability plugin.
 version: 1.0.0+1
-publish_to: none
 
 environment:
   sdk: ">=2.15.0 <3.0.0"
@@ -10,11 +9,11 @@ dependencies:
   flutter:
     sdk: flutter
   cupertino_icons: ^0.1.2
-  google_api_availability:
-    path: ../
 
 dev_dependencies:
+  google_api_availability:
+    path: ../
   flutter_lints: 1.0.4
 
 flutter:
-  uses-material-design: true
+  uses-material-design: true