fullimg.com

Add new site (closes #70).
Fix url pattern for linkbucks.
hostzi.com

Add new site (closes #71).
gallerycloud.net

Add new site (closes #73).
ghanaimages.co

Add new site (closes #74).
gratisimage.dk

Add new site (closes #75).
hornyimage.com

Add new site (closes #76).
hostingfailov.com

Add new site (closes #77).
hostingpics.net

Add new site (closes #78).
hostpic.org

Add new site (closes #79).
Update changelog and readme.
Bump version.