[WIP] Persistence (#44)

.gometalinter.json

Gopkg.lock

Gopkg.toml

Makefile

docs/loki-local-config.yaml

pkg/chunkenc/dumb_chunk.go

pkg/chunkenc/facade.go

pkg/chunkenc/gzip.go

pkg/chunkenc/interface.go

pkg/ingester/flush.go

pkg/ingester/index.go

pkg/ingester/ingester.go

pkg/ingester/instance.go

pkg/ingester/stream.go

pkg/ingester/stream_test.go

pkg/loki/loki.go

pkg/loki/modules.go

pkg/querier/http.go

pkg/querier/querier.go

pkg/querier/store.go