adding plugin.xml to build.properties

bundles/org.eclipse.e4.languages.javascript.debug.model/build.properties

diff --git a/bundles/org.eclipse.e4.languages.javascript.debug.model/build.properties b/bundles/org.eclipse.e4.languages.javascript.debug.model/build.properties
index 34d2e4d..e9863e2 100644
--- a/bundles/org.eclipse.e4.languages.javascript.debug.model/build.properties
+++ b/bundles/org.eclipse.e4.languages.javascript.debug.model/build.properties
@@ -1,4 +1,5 @@
 source.. = src/
 output.. = bin/
 bin.includes = META-INF/,\
-               .
+               .,\
+               plugin.xml