Remove onboarding screen

For now just create a local git repo and commit all the changes over
there, we're going to allow the user to first see the app and use it
however they want, and later connect it to a remote git repo.

This commit breaks the app, as the on-boarding screen is no longer
connected so you cannot push to a remote app.

lib/storage/git.dart

@@ -147,3 +147,16 @@ Future gitCommit({
     print("gitCommit Failed: '${e.message}'.");
   }
 }
+
+Future gitInit(String folderName) async {
+  print("Going to git init");
+  try {
+    await _platform.invokeMethod('gitInit', {
+      'folderName': folderName,
+    });
+    print("Done");
+  } on PlatformException catch (e) {
+    print("gitInit Failed: '${e.message}'.");
+    throw createGitException(e.message);
+  }
+}