Add Makefile

[jskswamy]

• resue the build steps locally and in travis-ci
• avoid passing same argument all the time for running test
• avoid running multiple commands
  • golint
  • golancli-lint
  • go test
  • build
• use vendor for faster build

Checklist for PR

[✓] Tests covering all the code branches. [✓] A Comment on how the function works and what are the different validations in the function. [✓] README.md should be updated about the function.