with-readline 0.1.1 (new formula)

Adds a formula for with-readline which adds readline support to tools
that don't have readline support like the OSX native sftp.

This depends on readline and fooling about with {C,LD}FLAGS was the
way I figured out to make this build. Criticism appreciated.
You should not have to link readline, and I don't have readline linked. Without these two lines, it built just fine for me and linked against readline (not libedit).

You can get logs by doing `brew gist-logs with-readline`.