Minor license update

Added EGI-InSPIRE & CESNET, updated years
Fixes EGI-FCTF/rOCCI-cli#2

Updated old docs and invalid examples showing linking with the
`create` action. This is no longer supported.
Fixes EGI-FCTF/rOCCI-cli#1

Added the `--skip-ca-check` option for skipping server cert
validation on SSL connections.
Added 'spec' task and Ruby 2.1.1 for testing
Minor version bump for rOCCI-api
Minor version bump to 4.2.4