simplified kubesort

v0.3.0 Limitations:

You need Bash in your system. (will add more ways to install in future versions).

v0.3.0 Release notes:

1. Typing to get the sorted output from kubectl is further reduced.
2. You don't have to remember the separate syntax for KUBESORT. Add kubectl keyword in front of kubectl get command.
   
   eg.:kubesort kubectl get pod age will get Pods sorted by their age