Fix dependency on mutli_json
Merge pull request #14 from johnf/dependencies

Add dependency on multi_json
Make install with --no-cache purge cached tarballs
Relocate Henson.settings stub into tarball_spec
Add tests for the new hash arg to Henson::Settings.new
Merge pull request #15 from wfarr/add-support-for-no-cache-mode-on-install

Make install with --no-cache purge cached tarballs, fixes #11
Make Henson::Source::Path#install! use a force symlink
Update henson install spec to check if path sourced modules use symlinks
Fix test coverage of Henson::Source::Path
Filter out spec from coverage stats
Merge pull request #16 from wfarr/path-source-should-symlink

Path source should symlink
Finally eliminate silly stdout and stderr hacks
Clean up a bunch of ruby warnings