Revert "Pedantic tweak to README"

This reverts commit 9a497dd3c9, which added an additional blank line to
the README in an attempt to work around a bug in GitHub's wikitext
renderer which causes it to swallow any whitespace that follows a bulleted
list. It didn't fix the issue (it's now simply swallowing two lines rather
than one).

Change-Id: I4312d783eea5585f5c3e3b895ab2c78a170b682d
Merge "Revert "Pedantic tweak to README""