explorercanvas: add license information

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/explorercanvas/explorercanvas.mk

@@ -7,6 +7,8 @@
 EXPLORERCANVAS_VERSION = r3
 EXPLORERCANVAS_SITE = http://explorercanvas.googlecode.com/files/
 EXPLORERCANVAS_SOURCE = excanvas_$(EXPLORERCANVAS_VERSION).zip
+EXPLORERCANVAS_LICENSE = Apache-2.0
+EXPLORERCANVAS_LICENSE_FILES = COPYING
 
 define EXPLORERCANVAS_EXTRACT_CMDS
 	unzip -d $(@D) $(DL_DIR)/$(EXPLORERCANVAS_SOURCE)