fix: indentation, deps and spec

[williamgueiros]

@prem-prakash and @joaothallis .

• [x] Format the code to ExDoc
• [x] Updates the libraries used in the project
• [x] Add names in Readme File
• [x] Add @spec local with @joaothallis help
• [x] Generate version 0.1.2

Sorry delay to do that. I believe, won't have this problem again.