Update introduction.adoc

An edit to the document for standard English rules and conventions. Small textual changes for grammatical and comprehension purposes.
Update introduction.adoc

Grammatical changes to the end table.
Merge pull request #86 from shadowcat-mdk/development/docs

Development/docs
Fix heading format and extension from .asciidoc to .adoc
Added hints for reviewer
Fix typo

- "bank link" to backlink