Needs translations

[quangtt-rks]

Due to #9, I'm working on translate texts on this theme. English and Vietnamese is OK now, also Japanese, but I need someone to review Japanese translation, I don't know it too much.

Also, if you can, please drop a translation of any language that you're familiar with.

Many thanks!

Below is Japanese translation.

[quangtt-rks]

//===== ja.json =====//

{
  "Previous story": "前の記事",
  "Next story": "次の記事",
  "Published": "公開日時",
  "Hi there!": "こんにちは！",
  "{name}'s Picture": "{name}の写真",
  "Subscribe": "購読",
  "Proudly published with {ghost_link}": "誇らしげに{ghost_link}で公開",
  "Back": "戻る",
  "Next": "次る",
  "No posts": "記事はありません",
  "1 post": "1記事",
  "% posts": "%記事",
  "posts": "記事",
  "Subscribe to {site_title}": "{site_title}を購読する",
  "Your email address": "メールアドレス",
  "Subscribed!": "購読しました！",
  "Subscribed to {site_title} with {sub_email}": "正常にメールアドレス<strong>{sub_email}</strong>で<strong>{site_title}</strong>を購読しました。",
  "Author": "著者:"
}

[quangtt-rks]

//===== en.json =====//

{
  "Previous story": "Previous story",
  "Next story": "Next story",
  "Published": "Published",
  "Hi there!": "Hi there!",
  "{name}'s Picture": "{name}'s Picture",
  "Subscribe": "Subscribe",
  "Proudly published with {ghost_link}": "Proudly published with {ghost_link}",
  "Back": "Back",
  "Next": "Next",
  "No posts": "No posts",
  "1 post": "1 post",
  "% posts": "% posts",
  "posts": "posts",
  "Subscribe to {site_title}": "Subscribe to {site_title}",
  "Your email address": "Your email address",
  "Subscribed!": "Subscribed!",
  "Subscribed to {site_title} with {sub_email}": "You've successfully subscribed to <strong>{site_title}</strong> with the email address <strong>{sub_email}</strong>.",
  "Author": "Author:"
}