New Less logos available

[matthew-dean]

I noticed that this repo mentioned wanting full-color logos for Less.js. I've just added some for some updates / changes to Less.js documentation.

https://github.com/less/less-docs/tree/3.x/assets/logo

I don't know where the original vector art is or who designed the original logo. So this will probably become the new official Less logo since there's source vector art now.

[kennethormandy]

Thanks for the note! The vector in this project is recreated by me, I couldn’t source the originally either, so it makes sense to me to switch to yours. Would you be open to submitting a PR with the new files?

[martindubenet]

The bottom part of the Right side CURLY BRACKET is NOT aligned horizontally with it's Left side sibling.
I realized this by importing the SVG within photoshop at with set to 1200px. When zoomed at this size I get a two pixels (2px) difference.

[matthew-dean]

Ok. Want to do a PR?