Add support of SimpleCov(RCov) coverage analyze.
Add information about expected ruby version.
This format support by rbenv, rvm and rbfu. More details: https://gist.github.com/fnichol/1912050
User rake file to run tests:
* rake spec (all);
* rake spec:unit;
* rake spec:integration.
Merge branch 'master' into rcov_tests

Conflicts:
	.gitignore
Add new development dependency - rake
* add script for jenkins CI (draft version);
* add Gemfile for local development (useful for newbie and community developments)
* add newline to the end of files;
* small refactoring rakefile.
Change ruby gems source for mcollective-client
Small refactoring Jenkins script
Move check script to run_tests.sh
Merge pull request #66 from warpc/rcov_tests

Rcov tests (in progress)