Simplify cljsdoc to md - Githubissues

[x] replace ===== with ##
[x] replace Example#hash with single Examples
[x] remove redundant Type section
[x] replace Name, Display, Tags, Related, Known As, Moved sections as Front Matter
- https://github.com/liquidz/frontmatter
[x] replace Caption with Summary
[x] replace Description with Details
[x] replace Related with See Also
[x] Remove Summary for Library and Details for Library (should be defaults)
[x] migrate all doc files to make sure base sections are stubbed (Related, Summary, Details, Examples)
[x] rename cljsdoc to docfile and use docfiles/ directory name
[x] include  at the end of the file for insert working [doc:] links on github
[ ] replace Signature format [args...] with Summary
- site should do a search for ^(name in summary, if not present, it should show the signature
[ ] merge Usage into Summary for syntax entries

cljs / api