Add a better readme message.

Author: jonsimantov

external/vcpkg

@@ -123,6 +123,10 @@ if(NOT APPLE AND NOT ANDROID AND UNIX)
       INTERFACE_INCLUDE_DIRECTORIES "${LIBSECRET_INCLUDE_DIRS}"
       INTERFACE_LINK_LIBRARIES "${LIBSECRET_LIBRARIES}"
     )
+    set_target_properties(firebase_installations PROPERTIES
+      INTERFACE_INCLUDE_DIRECTORIES "${LIBSECRET_INCLUDE_DIRS}"
+      INTERFACE_LINK_LIBRARIES "${LIBSECRET_LIBRARIES}"
+    )
     set_target_properties(firebase_remote_config PROPERTIES
       INTERFACE_INCLUDE_DIRECTORIES "${LIBSECRET_INCLUDE_DIRS}"
       INTERFACE_LINK_LIBRARIES "${LIBSECRET_LIBRARIES}"

release_build_files/CMakeLists.txt

@@ -561,7 +561,8 @@ code.
 
 ### 7.0.1
 -   Changes
-    -   Installations (Android): Fix incorrect STL variants.
+    -   Installations (Android): Fix incorrect STL variants, which fixes
+        a linker error on Android.
 
 ### 7.0.0
 -   Changes