XSD changed to make small-promo and large-promo images optional
Localization information is added
HTML markup fix
HTML markup fix
Unsupported languages are moved to a list
Language code is added
Merge pull request #47 from yinegvey/master

Yandex.Shell xml description, images, APKs are added
data folder is added with JSON and XML lists
categories are returned back (they disappeared before)
TOC is added, Status is added
Link to XSD is added
XSD Link format is changed.
Links to XML and JSON category lists are added
Type (app, game) is added to the category list XML and JSON
categories.json is added
Json mistakes are fixed
Initial APK parsing and AppDF generating support is added
JSON data from the specification is added to AppDF JS Editor
Path to data JSON files is fixed
store_categories JSON and XML are added