Niners in need of a No. 2 wideout

The 49ers entered the 2012 season with five No. 1 receivers.  They ended the campaign with only one. So now, as Eric Branch of the San Francisco Chronicle explains it, the Niners need a No. 2 wideout to complement Michael Crabtree. In quarterback Colin Kaepernick’s 10 starts this season, Crabtree was targeted 94 times.  That’s…