updated VENDORS for 2.5.1
removed Travis configuration
Merge branch '2.3' into 2.4

* 2.3:
  removed Travis configuration
Merge branch '2.4' into 2.5

* 2.4:
  removed Travis configuration

Conflicts:
	.travis.yml
Merge branch '2.5'

* 2.5:
  removed Travis configuration
  updated VENDORS for 2.5.1