Adicionando .gitignore

[afmenez]

trafficstars

Ignorando os arquivos que não precisam ser versionados.

[sourcelevel-bot[bot]]

Hello, @afmenez! This is your first Pull Request that will be reviewed by SourceLevel, an automatic Code Review service. It will leave comments on this diff with potential issues and style violations found in the code as you push new commits. You can also see all the issues found on this Pull Request on its review page. Please check our documentation for more information.

[sourcelevel-bot[bot]]

SourceLevel has finished reviewing this Pull Request and has found:

• 2 possible new issues (including those that may have been commented here).

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