meta-skeleton: layer.conf Should also have .bbappend in example

This will allow for an example recipe with a .bbappend, such as
busybox or kernel configure fragments.

(From OE-Core rev: 2a2a2540b37880cdd866f01d8e4077cbd0378749)

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-skeleton/conf/layer.conf

@@ -2,7 +2,7 @@
 BBPATH .= ":${LAYERDIR}"
 
 # We have recipes-* directories, add to BBFILES
-BBFILES += "${LAYERDIR}/recipes-*/*/*.bb"
+BBFILES += "${LAYERDIR}/recipes-*/*/*.bb ${LAYERDIR}/recipes-*/*/*.bbappend"
 
 BBFILE_COLLECTIONS += "skeleton"
 BBFILE_PATTERN_skeleton = "^${LAYERDIR}/"