Add awesome badge and remove trailing slashes

[mlcdf]

I've added the awesome badge and removed trailing slashes in order to comply with awesome-lint

Also, I wanted to make a PR and add this very list to sindresorhus/awesome but since awesome-lint is also the name of the linter for awesome lists, to avoid confusion, maybe you could rename this repo to something like awesome-linters ?

[caramelomartins]

Yes, I can do that.

I'm going to switch the License to CC0 as per suggestion in the sindresorhus' repository.

[caramelomartins]

@mlcdf forget it. I'm going to keep it unlicensed. The linters are not my own and I have no interest in changing the license since the list is free for everyone to use, copy or whatever. Unlicensed is the way to go.

Feel free to submit it wherever you want to. 😄

[mlcdf]

Got it, thanks!

[mlcdf]

I created an issue (#28) regarding the addition of this repo to the main awesome repository.