Update libraries.md

Fixing docs that became out of date following https://github.com/BladeRunnerJS/brjs/issues/779
Update libraries.md

Removing full bladerunnerjs.org links
Update use_libraries.md

Additional docs fix following changes made in https://github.com/BladeRunnerJS/brjs/issues/779
follow -> following
lib.conf -> br-lib.conf
lib.conf -> br-lib.conf
Merge branch 'develop' into gh-pages
fix link
Merge branch 'gh-pages' into review-library-docs

Conflicts:
	docs/concepts/libraries.md
	docs/use/use_libraries.md