youtube-dl: update version

Signed-off-by: Adrian Panella <ianchi74@outlook.com>

multimedia/youtube-dl/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=youtube-dl
-PKG_VERSION:=2016.07.11
+PKG_VERSION:=2016.08.13
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=http://youtube-dl.org/downloads/$(PKG_VERSION)/
-PKG_MD5SUM:=2175d314e9a2715bf724b8c683ee536f
+PKG_SOURCE_URL:=https://yt-dl.org/downloads/$(PKG_VERSION)/
+PKG_MD5SUM:=cd50b7e3df1d63b86fae0b6fa5e05a2f
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)
 
 PKG_LICENSE:=Unlicense