docs(upgrade) 0.5.x upgrade precisions
docs(upgrade) 0.5.x upgrade precisions

- one must upgrade to 0.5 before 0.6
- python C* driver must be 2.7.2

Address #957

Mashape/kong,salazar/kong,Kong/kong,icyxp/kong,beauli/kong,Kong/kong,Vermeille/kong,ccyphers/kong,jerizm/kong,smanolache/kong,li-wl/kong,Kong/kong,jebenexer/kong,shiprabehera/kong,ajayk/kong,akh00/kong