version 0.2 ready for upload

.gitignore

@@ -29,11 +29,17 @@
 # dependencies
 node_modules
 
-# Build output. The unpacked extension and the signing package are release
-# artifacts, not sources.
+# Unpacked build output. Regenerated by "make", never edited by hand.
 build
+
+# Intermediate packages.
 logsdu-*.zip
-*.xpi
+
+# Packaged .xpi files are NOT ignored. They are the published artifact: the
+# signed add-on is what people download and install, so it belongs in the
+# repository (or attached to a release) rather than being rebuilt by everyone
+# who wants to install it. An unsigned local build can be removed with
+# "make clean".
 
 # Exclude sourcemaps
 *.map