update gitignore
update gitignore

sh4nth/atlasdb-1,EvilMcJerkface/atlasdb,sh4nth/atlasdb-1,EvilMcJerkface/atlasdb,palantir/atlasdb,andy2palantir/atlasdb,palantir/atlasdb,andy2palantir/atlasdb,palantir/atlasdb,EvilMcJerkface/atlasdb