add .gitattributes file to enforce Unix newlines within the repo

BS3 commits: f2dab82d307259c9029e21fc5020ada482b0df7c
reference root issue in explanatory comment

BS3 commits: 199872418c1d0aac6e79218cfb86ba2b751e571e
account for 11050 in the docs

BS3 commits: 7a9d9f7dc485bcd624c1e49c99029c9d2d410e11
add comment regarding 11598

BS3 commits: 2d4ee18162e4922c7cffbf0d71a7ec7fb303d2a1
grunt

BS3 commits: bac153127c4fc9a8f7d511b1424f73f089b1cbb6