russian translation for Markdown
Markdown-ru: language tag
Added `sed` and `grep` examples to useful-commands
amended grep description
amended sed and bash descriptions
- mo betta examples

- add `inout` example
- better `optional` example
- Playground issue has been resolved, uncommented `protocol` example
Changed descriptions, added grep, fgrep examples
Init haml md
added comments, tags, classes, and attributes
Copy change to intro and formatting
testing git config
Added filters, ruby interpolation and additional resources
Fixed indentation
Added official docs link
Add self as contributor to C++ doc
Remove trailing whitspace from c++.html.markdown
add german translation of csharp tutorial
fix yet-to-be-translated name
typo
them typographic mistakes