[espresso] Fix pod lint warnings (flutter#2679)

Author: jmagman

packages/espresso/CHANGELOG.md

@@ -1,6 +1,7 @@
 ## 0.0.1+5
 
 * Replace deprecated `getFlutterEngine` call on Android.
+* Fix CocoaPods podspec lint warnings.
 
 ## 0.0.1+4
 

packages/espresso/ios/espresso.podspec

@@ -5,14 +5,16 @@
 Pod::Spec.new do |s|
   s.name             = 'espresso'
   s.version          = '0.0.1'
-  s.summary          = 'A new flutter plugin project.'
+  s.summary          = 'Flutter Espresso'
   s.description      = <<-DESC
-A new flutter plugin project.
+Provides bindings for Espresso tests of Flutter apps.
+Downloaded by pub (not CocoaPods).
                        DESC
-  s.homepage         = 'http://example.com'
-  s.license          = { :file => '../LICENSE' }
-  s.author           = { 'Your Company' => 'email@example.com' }
-  s.source           = { :path => '.' }
+  s.homepage         = 'https://github.com/flutter/plugins'
+  s.license          = { :type => 'BSD', :file => '../LICENSE' }
+  s.author           = { 'Flutter Dev Team' => 'flutter-dev@googlegroups.com' }
+  s.source           = { :http => 'https://github.com/flutter/plugins/tree/master/packages/espresso' }
+  s.documentation_url = 'https://pub.dev/packages/espresso'
   s.source_files = 'Classes/**/*'
   s.public_header_files = 'Classes/**/*.h'
   s.dependency 'Flutter'