v2/README: make a definitive decision on v2 import path

This change makes it clear that the v2 import path
is github.com/russross/blackfriday/v2, and updates
various links accordingly.

See russross#587 (comment) for details.

This change also converges the README for v1 and v2
to be consistent, as they've started to drift apart.

For russross#587.

GitHub-Pull-Request: russross#675

v2/README: make a definitive decision on v2 import path

This change makes it clear that the v2 import path
is github.com/russross/blackfriday/v2, and updates
various links accordingly.

See russross#587 (comment) for details.

This change also converges the README for v1 and v2
to be consistent, as they've started to drift apart.

For russross#587.

GitHub-Pull-Request: russross#675

README: make a definitive decision on v2 import path

This change makes it clear that the v2 import path
is github.com/russross/blackfriday/v2, and updates
various links accordingly.

See russross#587 (comment) for details.

This change also converges the README for v1 and v2
to be consistent, as they've started to drift apart.
(See PR russross#675 for the equivalent change to the README
on v2 branch.)

For russross#587.

GitHub-Pull-Request: russross#674

README: make a definitive decision on v2 import path

This change makes it clear that the v2 import path
is github.com/russross/blackfriday/v2, and updates
various links accordingly.

See russross#587 (comment) for details.

This change also converges the README for v1 and v2
to be consistent, as they've started to drift apart.
(See PR russross#675 for the equivalent change to the README
on v2 branch.)

For russross#587.

GitHub-Pull-Request: russross#674

支持解析Markdown得到URL

支持解析Markdown得到URL

v2: Add go.mod (russross#487)

Add go.mod (russross#488)

Merge pull request russross#433 from IainHaslam/master

Fix HTML5 by removing rel="footnote" which is invalid.

Merge pull request russross#384 from bep/v2

Add Smartypants support for French Guillemets