fix #173: set ibrowse dep to v3.0.4 in rebar.config
fix #173: set ibrowse dep to v3.0.4 in rebar.config

Set ibrowse dependency to version 3.0.4 to match what test/Makefile
selects. Later versions do not work so well on OS X Mavericks.

jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws,jgrinstead/yaws