docs: add images for g+ homepage announcement

Change-Id: I36430a1885be368218e1c896d6fc008355096a06
diff --git a/tools/droiddoc/templates-sdk/assets/images/home/google-plus-small.png b/tools/droiddoc/templates-sdk/assets/images/home/google-plus-small.png
new file mode 100644
index 0000000..5bb7d7a
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+++ b/tools/droiddoc/templates-sdk/assets/images/home/google-plus-small.png
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diff --git a/tools/droiddoc/templates-sdk/assets/images/home/google-plus.png b/tools/droiddoc/templates-sdk/assets/images/home/google-plus.png
new file mode 100644
index 0000000..90871e1
--- /dev/null
+++ b/tools/droiddoc/templates-sdk/assets/images/home/google-plus.png
Binary files differ