Max Schulkin

Add mutex lock on write-to-file function

2

proposed solution for https://github.com/naqvijafar91/cuteDB/issues/4 as the issue states, the idea is adding a lock when block service writes to file

Please read [CONTRIBUTING.md](https://github.com/erroneousboat/slack-term/blob/master/CONTRIBUTING.md) --- Version: v0.5.0 Installation method: Go Golang now enables installing via `go install @`(which `get`s and `build`s) and does not allow `go get` outside of go modules...