16 tool manuals added

16 more tool manuals and parts lists have been added over the past couple of days:

Black & Decker:
   - 1 heat gun manual
   - 1 saw manual

Buffalo Tools:
   - 1 impact wrench manual

DeWalt:
   - 1 heat gun parts list
   - 2 planer manuals
   - 1 saw manual, 1 saw parts list

Hitachi:
   - 1 drill parts list
   - 1 driver manual, 1 driver parts list
   - 2 saw manuals, 2 saw parts lists
   - 1 tacker parts list