Working on supporting pluggable descriptor.proto definitions.

com.google.eclipse.protobuf/build.properties

diff --git a/com.google.eclipse.protobuf/build.properties b/com.google.eclipse.protobuf/build.properties
index 300fb1a..cddf73c 100644
--- a/com.google.eclipse.protobuf/build.properties
+++ b/com.google.eclipse.protobuf/build.properties
@@ -3,4 +3,5 @@
 bin.includes = META-INF/,\
                .,\
                plugin.xml,\
-               OSGI-INF/
+               OSGI-INF/,\
+               descriptor.proto