wiki update
Update basic.md
Updated _Footer (markdown)
Updated validation (markdown)
Updated services (markdown)
Updated Home (markdown)
Updated queries (markdown)
Updated Relations (markdown)
Updated basic (markdown)
Updated Libraries (markdown)
Updated Install (markdown)
Update Attributes.png
Update Attributes.md
Merge branch 'master' of https://github.com/AutomationML/AMLEngine2.1.wiki