Revert "Revert ":octocat: Added .gitattributes & .gitignore files""

This reverts commit 1a84683786505e1768ed1a6effa1499210aa2178.
BRT source code for website
Revert "Revert "Revert ":octocat: Added .gitattributes & .gitignore files"""

This reverts commit 24dad21ff8f3becf6bfdc39010fed8c5be613e31.