Next release update fixes

The following updates are needed:

cli.rb remove the help method and the hooks for help calls
configuration.rb
- add require 'emasser/version'
- modify hello call
  - users = ['rookie', 'greenhorn', 'novice', 'expert', 'oracle', 'maestro']
  - user_name = ENV.fetch('USERNAME', users.sample)
- Update the emasser_pki_help method to show that the User-uid may be required - add the following after line 83
```
  puts "\n"
  puts 'Certain eMASS integrations may require this variable for actionable (POST,PUT,DELETE) endpoint calls:'.yellow
  puts '  EMASSER_USER_UID - The eMASS User Unique Identifier (user-uid)'.cyan
```
Add the capability of interactive (via command line prompt) generate the .env configuration file. Use TTY::Prompt

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