New examples. More information.

Added

• files with examples on Java and C#
• CONTRIBUTING.md
• more information in README.md
• Ukranian and Russian languages
• footer in wiki pages
• screenshots, smiles, gifs

Corrected

• text formating
• grammar mistakes

Deleted

• spoilers with examples from wiki pages

Publish heuristics for clear code

The first release of a collection of heuristic rules with minimal changes to the original.

• Making wiki and read-me using markdown.
• Java examples.