Update README.md

Include latest version in README's suggested dependency.
"fast-start" the delivery of gzip-compressed bodies, and support flushing of GZIPOutputStreams on JDK7+

GZIPOutputStream.flush() is essentially a no-op under <= JDK6 given
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4813885. We weren't
calling it before anyway, but its JDK7 semantics are necessary when
compressing seq response bodies; otherwise, the middleware will require
complete consumption of the seq before a single byte hits the wire.
Without this change, gzipping of seq bodies that are truly lazy (e.g.
supporting server-sent events) is not practical; this patch therefore
also disables seq body support given pre-JDK7 GZIPOutputStream.flush()
functionality.
end-user documentation of gzipping of Ring seq bodies under JDK6 vs. 7
Put jdk7 check into a delay, ensure it doesn't run AOT-time, etc
Merge pull request #3 from cemerick/master

"fast-start" the delivery of gzip-compressed bodies, and support flushing of GZIPOutputStreams on JDK7+
Version 0.1.3, supports flushing intermediate results.
bump README version
Merge pull request #4 from cemerick/master

bump README version
Merge branch 'master' of https://github.com/doo/ring-gzip-middleware

* 'master' of https://github.com/doo/ring-gzip-middleware:
  bump README version
  Version 0.1.3, supports flushing intermediate results.
  Put jdk7 check into a delay, ensure it doesn't run AOT-time, etc
  end-user documentation of gzipping of Ring seq bodies under JDK6 vs. 7
  "fast-start" the delivery of gzip-compressed bodies, and support flushing of GZIPOutputStreams on JDK7+
  Update README.md

Conflicts:
	README.md
	project.clj
	src/ring/middleware/gzip.clj