Don't redirect stdout/stderr when BACKGROUND=true

Ruby 1.9's Process.daemon redirects stderr/stdout to /dev/null
which makes logging impossible. This change prevents
Process.daemon from redirecting stderr and stout to /dev/null
unless ENV['MUTE'] is set.
Change: STDOUT.sync = true
Fix Gemfile to use 'https://rubygems.org'
Fix test typo
merging master => locking
removing debug output
Merge pull request #176 from bvandenbos/locking

Locking
bumping version
Merge pull request #156 from nmeans/c45d9977bc1448d34fa09c94b4516e950bac0d70

Keep BACKGROUND from automatically redirecting stderr/stdout to /dev/null
Merge pull request #203 from ouranos/fix_test_typo

Fix test typo
help wanted
Normalize markdown extension

There are a ton of extension options for Markdown. Should we choose just one for
consistency?
Merge pull request #233 from bbauer/normalize_markdown_extension

Normalize Markdown Extension
Merge pull request #174 from giraffi/sync_stdout

Change: STDOUT.sync = true
Merge pull request #202 from ouranos/fix_gemfile_source

Fix Gemfile to use 'https://rubygems.org'
add GitHub Flavored Markdown to README

* This makes the example code easier to read,
  especially when perusing the docs on github