Added redis plugin
Updated default redis port to 6379
Formatting
Removed comma - bug in ruby 1.8
Casted to int; Change chart type;
Merge branch 'master' of github.com:cargomedia/copperegg_agents into issue-10

Conflicts:
	README.md
Merge branch 'master' of github.com:cargomedia/copperegg_agents into issue-10

Conflicts:
	README.md
	copperegg_agents.gemspec
	lib/copperegg_agents.rb
Merge pull request #10 from kris-lab/issue-10

Add redis plugin