Set the site default docs to 0.6.2

[kishore g]

Hi,

I feel 0.7.0 is still alpha/beta and needs to go through some iterations
before we can flush out the apis.

Kanak, is it possible to point the default to 0.6.2 ? We need to put
something in bold about 0.7.0 not being production ready and api not
stabilized.

WDYT?

thanks
Kishore