Made plugins add their repos to consuming projects (#190)

packages/quick_actions/android/build.gradle

diff --git a/packages/quick_actions/android/build.gradle b/packages/quick_actions/android/build.gradle
index a66db47..315e005 100644
--- a/packages/quick_actions/android/build.gradle
+++ b/packages/quick_actions/android/build.gradle
@@ -11,7 +11,7 @@
     }
 }
 
-allprojects {
+rootProject.allprojects {
     repositories {
         jcenter()
     }