Update README.md

 * Bundle_ja.properties は Unicode Escape Sequence（\uXXXX)形式
 * Markdownの整形
Fixed Missing table header for github markdown

  Github Markdown flavor required a header for rendering HTML table.
Fixed encoding for Python 2.x
Merge pull request #4 from teamikl/fix-encoding-for-py2

Fixed encoding for py2
Merge pull request #2 from teamikl/patch-1

Update README.md