fixed &pi; entity inside code block
fixed &pi; entity inside code block
Merge pull request #129 from floriangaechter/master

fixed &pi; entity inside code block
Online Web IDEs: added 'Fiddle Salad' (#128), changed jsFiddle link to pre-configured snippet, sorted alphabetically.
Added Chinese translation of the latest documents.
Merge pull request #130 from wangsai/chinese-translation

Added Chinese translation of the latest documents.