add .gitattribute to highlight *.vimspec and .themisrc as Vim script on GitHub (#1122)

rhysd · web-flow · commit 67a3561a547a · 2021-03-28T13:27:58.000+09:00
diff --git a/.gitattributes b/.gitattributes
@@ -1 +1,3 @@
-* text=auto
+* text=auto
+*.vimspec linguist-language=vim
+.themisrc linguist-language=vim
