updated VENDORS for 2.5.3
Fixed version in links
minor #703 Fixed version in links (zomberg)

This PR was merged into the 2.5 branch.

Discussion
----------

Fixed version in links

Commits
-------

00c780a Fixed version in links
Merge branch '2.5'

* 2.5:
  Fixed version in links
  updated VENDORS for 2.5.3
updated version in README for 2.6