increase the vf timeout to 500ms
Merge pull request #92 from will123195/master

vf timeout adjustment
vf timeout increase to 1500ms
Merge pull request #93 from will123195/master

increase to 1500ms
3s timeout
Merge pull request #94 from will123195/master

temporary fix -- set vf timeout to 3s
Merge remote-tracking branch 'upstream/master'