Add spec for google drive onebox

Add spec for google drive onebox

diff --git a/spec/fixtures/googledrive.response b/spec/fixtures/googledrive.response
new file mode 100644
index 0000000..caaff11
--- /dev/null
+++ b/spec/fixtures/googledrive.response
@@ -0,0 +1,304 @@

[... diff too long, it was truncated ...]

GitHub sha: eba1f3e7