New gem dependencies (chef ~> 11.8.2, Berkshelf ~> 2.0.12)
A lot of new command-line and config options:
- Api endpoint
- Local Berksfile
- Tarball url
- Use cookbooks from cache (avoid lauch berkshelf to get cookbooks)

All command line options now are config options too (for example json_file can be placed in config file)

Added support to download cookbooks with berkshelf
Bump to 0.4.1
Modified specs to work with new functionality
Added explanatory comments
	modified:   lib/lambom/converger.rb
	modified:   lambom.gemspec
	modified:   lib/lambom/converger.rb
New gem description

	modified:   lambom.gemspec
	modified:   lib/lambom/version.rb
Merge branch 'master' of github.com:alambike/lambom
Corrected description

	modified:   lambom.gemspec