update build to Eclipse Tycho 0.16

Signed-off-by: Florian Thienel <florian@thienel.org>
diff --git a/org.eclipse.vex.documentation/.gitignore b/org.eclipse.vex.documentation/.gitignore
index 9095d63..66b0fca 100644
--- a/org.eclipse.vex.documentation/.gitignore
+++ b/org.eclipse.vex.documentation/.gitignore
@@ -1,2 +1,4 @@
-/help
-/target
+help
+

+target
+/src_does_not_exist