Preserve Sub Directory Structure while rendering templates

[nazarhussain]

This will allow to use render and use templates in subdirectories;

import address from './nested_template/address'

[nazarhussain]

All tests are passing on my side.

  kale tests
    ✓ should have the proper version
    ✓ should have render function
    ✓ should require an output path

  action tests
    ✓ should exist
    ✓ first should exist
    ✓ first() should return expected result
    ✓ sortBy should exist
    ✓ sortBy() should return expected result [numbers ASC]
    ✓ sortBy() should return expected result [numbers DESC]
    ✓ sortBy() should return expected result [objects ASC]
    ✓ sortBy() should return expected result [objects DESC]
    ✓ filter should exist
    ✓ filter() should return expected result
    ✓ reverse should exist
    ✓ reverse() should return expected result [array]
    ✓ reverse() should return expected result [string]
    ✓ pluck should exist
    ✓ pluck() should return expected result
    ✓ toUpper should exist
    ✓ toUpper() should return expected result
    ✓ toLower should exist
    ✓ toLower() should return expected result
    ✓ capitalize should exist
    ✓ capitalize() should return expected result

  template tests
    example template
      ✓ user
    nested template
      ✓ user nested address template
    simple template
      ✓ simple
      ✓ with locals
    with actions
      ✓ standard actions
      ✓ custom actions


  30 passing (38ms)

There is some other issue due to which travis build is failed.

[jaylach]

Looks like I gotta fix travis, that shouldn't be trying to run npm run gen-parser on this branch, lol. Otherwise, this looks good! Thanks!! :)