Add license info so it is visible to maven

Change-Id: I2fa750d7e08acad8a95fdcd2147f83b62061980c
Reviewed-on: http://fulliautomatix.ics.uci.edu:8443/185
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Till Westmann <westmann@gmail.com>
diff --git a/asterix-external-data/pom.xml b/asterix-external-data/pom.xml
index 25337e7..0b045f1 100644
--- a/asterix-external-data/pom.xml
+++ b/asterix-external-data/pom.xml
@@ -14,6 +14,16 @@
 		<groupId>edu.uci.ics.asterix</groupId>
 		<version>0.8.7-SNAPSHOT</version>
 	</parent>
+
+  <licenses>
+    <license>
+      <name>Apache License, Version 2.0</name>
+      <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+      <distribution>repo</distribution>
+      <comments>A business-friendly OSS license</comments>
+    </license>
+  </licenses>
+
 	<artifactId>asterix-external-data</artifactId>
 
 	<build>