Use suggested analysis_options file name

pkgs/watcher/analysis_options.yaml

diff --git a/pkgs/watcher/.analysis_options b/pkgs/watcher/analysis_options.yaml
similarity index 100%
rename from pkgs/watcher/.analysis_options
rename to pkgs/watcher/analysis_options.yaml

pkgs/watcher/pubspec.yaml

diff --git a/pkgs/watcher/pubspec.yaml b/pkgs/watcher/pubspec.yaml
index 41fbd8b..987e7b7 100644
--- a/pkgs/watcher/pubspec.yaml
+++ b/pkgs/watcher/pubspec.yaml
@@ -1,5 +1,5 @@
 name: watcher
-version: 0.9.7+5
+version: 0.9.7+6.dev
 author: Dart Team <misc@dartlang.org>
 homepage: https://github.com/dart-lang/watcher
 description: >