Config file is broken

[vakond]

How to reproduce:

1. Install go version 1.14.9
2. make install
3. chainbridge --help
4. See "--config value TOML configuration file"
5. Create config.toml as stated in ChainBridge documentation (Step by Step Usage Guide):

[[chains]]
name = "Eth"
type = "ethereum"
id = 0
endpoint = "ws://localhost:8545"
from = ""
opts = { bridge = "0x3167776db165D8eA0f51790CA2bbf44Db5105ADF", erc20Handler = "0x2B6Ab4b880A45a07d83Cf4d664Df4Ab85705Bc07", genericHandler = "0x21605f71845f372A9ed84253d2D024B7B10999f4" }

[[chains]]
name = "Substrate"
type = "substrate"
id = 1
endpoint = "ws://localhost:9944"
from = ""
opts = { }

6. Run chainbridge --config ./config.toml
7. See error message "unrecognized extention: .toml"

It seems the config should be in JSON, but what exact format?

[ansermino]

toml support was deprecated in favour of json, completely removed here #516

Examples can be found here: https://github.com/ChainSafe/ChainBridge#configuration