Pod log, Resource version to watch API, List and get details of a node...

New features:

• Add a way to list and get details of a node (#234) @tomiwu
• Add support for the pod log endpoint (#238) @yurique
• Support for custom raw API requests (#260) @yurique
• Add optional resourceVersion to watch API (#223) @timbertson @jchapuis @yurique

Bug fixs:

• Refresh before token expires, not after (#254) @timbertson

Other:

• Before running a new test suite, ensure that the minikube environment is clean by performing necessary namspaces cleaning (#234) @tomiwu
• Fix in authorization type error in README (#249) @bench87
• Tweaking tests (#257) @yurique