Building Nakama from source

1. update to the last go version
2. using sqlite as a database backend

e.g: run dev. build of Nakama with nk.db sqlite database: ./src/nakama/build/dev/nakama -database.address nk.db

Prerequisite:

1. Installing jq for tools
2. Installing nodejs
3. Installing dep (set up GOBIN)
4. protoc v3.3.0 (newer versions might not work)