Revel run cmd become more robust

[jeevatkm]

As proposed in revel/revel#389 also run much improved with following-

• First thing revel run can detect import path from current directory
• revel run brings following combination
  • revel run import-path run-mode port
  • revel run import-path run-mode
  • revel run import-path port
  • revel run run-mode port
  • revel run import-path
  • revel run run-mode
  • revel run port
  • revel run

Whichever is not supplied will default to already know values of Revel.

[brendensoares]

So revel run [import-path] [run-mode] [port]

This is going to add a nice convenience factor to the Revel dev workflow! 💃

[brendensoares]

"is hold" to "holds"

[brendensoares]

👍 Looks good!