Update gitignore and npmignore

.gitignore

@@ -1,7 +1,10 @@
+# When adding entries here, remember to also update `.npmignore`.
+
 node_modules/
 build/
 build-pre-gyp/
 Release/
+deps/*/Debug/
 libleveldb.so
 libleveldb.a
 leakydb

.npmignore

@@ -1,24 +1,64 @@
+deps/**/*.md
+deps/**/.git
+
+deps/leveldb/leveldb-rocksdb/arcanist_util/
+deps/leveldb/leveldb-rocksdb/build_tools/
+deps/leveldb/leveldb-rocksdb/coverage/
+deps/leveldb/leveldb-rocksdb/docs/
+deps/leveldb/leveldb-rocksdb/examples/
+deps/leveldb/leveldb-rocksdb/hdfs/setup.sh
+deps/leveldb/leveldb-rocksdb/java/
+deps/leveldb/leveldb-rocksdb/third-party/gtest-*/
+deps/leveldb/leveldb-rocksdb/tools/*.sh
+deps/leveldb/leveldb-rocksdb/tools/*.py
+deps/leveldb/leveldb-rocksdb/tools/*.dmp
+deps/leveldb/leveldb-rocksdb/tools/rdb/
+deps/leveldb/leveldb-rocksdb/README.md
+deps/leveldb/leveldb-rocksdb/HISTORY.md
+
+deps/snappy/snappy*/testdata/
+deps/snappy/snappy*/*.txt
+deps/snappy/snappy*/README.md
+
+README
+INSTALL
+NEWS
+AUTHORS
+TODO
+
+# Build artifacts
+deps/*/Release/
+deps/*/Debug/
 *.tar.gz
+*.tgz
 build/
 build-pre-gyp/
-test-data.tar
-test-data.db.tar
-deps/leveldb/leveldb-basho/
-deps/leveldb/leveldb-hyper/
-deps/snappy/*/testdata/
-leakydb
+libleveldb.so
+libleveldb.a
+*.sln
+*.vcxproj
+*.vcxproj.filters
+
+# Benchmarks and tests
 bench/
 test/
-deps/leveldb/*/docs
-deps/leveldb/*/java
-README
-INSTALL
-NEWS
-AUTHORS
-Dockerfile
-.dockerignore
-.nyc_output/
+*.csv
 
+# Misc
+.nyc_output/
+yarn.lock
+.dntrc
+.gitmodules
 .travis.yml
 appveyor.yml
-.dntrc
+.appveyor.yml
+Dockerfile
+.dockerignore
+Vagrantfile
+.arcconfig
+.clang-format
+
+# Unknown
+leakydb
+test-data.tar
+test-data.db.tar