Try to resolve relative link
Try to resolve relative link

Feeds might have relative links, so resolve those links according to the feed's
link.

This changeset seems to be solving issue #41. Issue #53 is still not completely
solved since the parsed feed's link is incorrect. Might want to check the atom
parser.

Signed-off-by: Fajran Iman Rusadi <7a3fc234287ecfcc2730982e06c705c09294faad@gmail.com>

wangjun/goread,mikecb/goread,mikecb/goread,mikecb/goread,P7h/goread,beni55/goread,P7h/goread,beni55/goread,mgaitan/goread,wangjun/goread,lnmx/goread,beni55/goread,lnmx/goread,doublehou/goread,youprofit/goread,mjibson/goread,mjibson/goread,mgaitan/goread,elancom/goread,Feitianyuan/goread,Feitianyuan/goread,youprofit/goread,P7h/goread,doublehou/goread,elancom/goread,doublehou/goread,mgaitan/goread,Feitianyuan/goread,wangjun/goread,elancom/goread,youprofit/goread,lnmx/goread,mjibson/goread