Added support for hexo-symbols-count-time v0.4.0

[ivan-nginx]

1. Modified default settings: AWL = 4; WPM = 275.
2. Added suffix as string parameter if time to read less than 60 minutes. Default: mins. (#11)
3. Refactored language translates.

Roadmap (#67): Improve time visible for symbols-count-time plugin (if more then 60 mins, add hours)

Requirements

• Update or reinstall hexo-symbols-count-time to use it.
• Need to update NexT at least to this pull for 100% compatability.

Plugin tests

$ npm test

  Hexo Symbols Count Time
    Test symbolsCount function & check should / expect / assert
      ✓ should - 22
      ✓ expect - 22
      ✓ assert - 22
    Test symbolsCount < 999
      ✓ Symbols: 569 => 569
    Test symbolsCount > 999
      ✓ Symbols: 1337 => 1.3k
    Test symbolsCount > 9999
      ✓ Symbols: 10703 => 11k
    Test symbolsCount & symbolsTime (awl / wpm)
      ✓ Symbols: (symbolsCount = 90)
      ✓ Time: [awl = 5, wpm = 200] => 1 mins.
      ✓ Time: [awl = 5, wpm = 5] => 4 mins.
      ✓ Time: [awl = 1, wpm = 50] => 2 mins.
    Test symbolsTime (< 58 minutes / > 1:08)
      ✓ Time: 64218 = 58 => 58 minutes
      ✓ Time: 74921 = 68 => 1:08