Merge pull request #256 from lunny/lunny/golint_modules_avatar

Golint fixed for modules/avatar

models/user.go

 		return fmt.Errorf("Decode: %v", err)
 	}
 
-	m := resize.Resize(avatar.AVATAR_SIZE, avatar.AVATAR_SIZE, img, resize.NearestNeighbor)
+	m := resize.Resize(avatar.AvatarSize, avatar.AvatarSize, img, resize.NearestNeighbor)
 
 	sess := x.NewSession()
 	defer sessionRelease(sess)

modules/avatar/avatar.go

 	"github.com/issue9/identicon"
 )
 
-const AVATAR_SIZE = 290
+// AvatarSize returns avatar's size
+const AvatarSize = 290
 
-// RandomImage generates and returns a random avatar image unique to input data
+// RandomImageSize generates and returns a random avatar image unique to input data
 // in custom size (height and width).
 func RandomImageSize(size int, data []byte) (image.Image, error) {
 	randExtent := len(palette.WebSafe) - 32
 // RandomImage generates and returns a random avatar image unique to input data
 // in default size (height and width).
 func RandomImage(data []byte) (image.Image, error) {
-	return RandomImageSize(AVATAR_SIZE, data)
+	return RandomImageSize(AvatarSize, data)
 }