[shared_preferences_web] Prepare to be endorsed (#2392)

diff --git a/packages/shared_preferences/shared_preferences_web/CHANGELOG.md b/packages/shared_preferences/shared_preferences_web/CHANGELOG.md
index 1061441..2f77759 100644
--- a/packages/shared_preferences/shared_preferences_web/CHANGELOG.md
+++ b/packages/shared_preferences/shared_preferences_web/CHANGELOG.md
@@ -1,3 +1,8 @@
+# 0.1.2
+
+* Bump lower constraint on Flutter version.
+* Add stub podspec file.
+
 # 0.1.1
 
 * Adds a `shared_preferences_macos` package.
diff --git a/packages/shared_preferences/shared_preferences_web/ios/shared_preferences_web.podspec b/packages/shared_preferences/shared_preferences_web/ios/shared_preferences_web.podspec
new file mode 100644
index 0000000..11f8b73
--- /dev/null
+++ b/packages/shared_preferences/shared_preferences_web/ios/shared_preferences_web.podspec
@@ -0,0 +1,20 @@
+#
+# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html
+#
+Pod::Spec.new do |s|
+  s.name             = 'shared_preferences_web'
+  s.version          = '0.0.1'
+  s.summary          = 'No-op implementation of shared_preferences web plugin to avoid build issues on iOS'
+  s.description      = <<-DESC
+temp fake shared_preferences_web plugin
+                       DESC
+  s.homepage         = 'https://github.com/flutter/plugins/tree/master/packages/shared_preferences/shared_preferences_web'
+  s.license          = { :file => '../LICENSE' }
+  s.author           = { 'Flutter Team' => 'flutter-dev@googlegroups.com' }
+  s.source           = { :path => '.' }
+  s.source_files = 'Classes/**/*'
+  s.public_header_files = 'Classes/**/*.h'
+  s.dependency 'Flutter'
+
+  s.ios.deployment_target = '8.0'
+end
diff --git a/packages/shared_preferences/shared_preferences_web/pubspec.yaml b/packages/shared_preferences/shared_preferences_web/pubspec.yaml
index 022e7a4..4190eef 100644
--- a/packages/shared_preferences/shared_preferences_web/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_web/pubspec.yaml
@@ -1,7 +1,7 @@
 name: shared_preferences_web
 description: Web platform implementation of shared_preferences
 homepage: https://github.com/flutter/plugins/tree/master/packages/shared_preferences/shared_preferences_web
-version: 0.1.1
+version: 0.1.2
 
 flutter:
   plugin:
@@ -24,4 +24,4 @@
 
 environment:
   sdk: ">=2.0.0-dev.28.0 <3.0.0"
-  flutter: ">=1.12.8 <2.0.0"
+  flutter: ">=1.12.13+hotfix.4 <2.0.0"