Move examples to material_ui. Is this the directory structure we want to keep?

diff --git a/examples/api/lib/material/autocomplete/autocomplete.0.dart b/packages/material_ui/examples/api/lib/material/autocomplete/autocomplete.0.dart
similarity index 100%
rename from examples/api/lib/material/autocomplete/autocomplete.0.dart
rename to packages/material_ui/examples/api/lib/material/autocomplete/autocomplete.0.dart


diff --git a/examples/api/lib/material/autocomplete/autocomplete.1.dart b/packages/material_ui/examples/api/lib/material/autocomplete/autocomplete.1.dart
similarity index 100%
rename from examples/api/lib/material/autocomplete/autocomplete.1.dart
rename to packages/material_ui/examples/api/lib/material/autocomplete/autocomplete.1.dart


diff --git a/examples/api/lib/material/autocomplete/autocomplete.2.dart b/packages/material_ui/examples/api/lib/material/autocomplete/autocomplete.2.dart
similarity index 100%
rename from examples/api/lib/material/autocomplete/autocomplete.2.dart
rename to packages/material_ui/examples/api/lib/material/autocomplete/autocomplete.2.dart


diff --git a/examples/api/lib/material/autocomplete/autocomplete.3.dart b/packages/material_ui/examples/api/lib/material/autocomplete/autocomplete.3.dart
similarity index 100%
rename from examples/api/lib/material/autocomplete/autocomplete.3.dart
rename to packages/material_ui/examples/api/lib/material/autocomplete/autocomplete.3.dart


diff --git a/examples/api/lib/material/autocomplete/autocomplete.4.dart b/packages/material_ui/examples/api/lib/material/autocomplete/autocomplete.4.dart
similarity index 100%
rename from examples/api/lib/material/autocomplete/autocomplete.4.dart
rename to packages/material_ui/examples/api/lib/material/autocomplete/autocomplete.4.dart