try to make github not count license information in language usage report

ganthern · ganthern · commit 56374c814f5b · 2021-10-07T10:31:43.000+02:00
diff --git a/.gitattributes b/.gitattributes
@@ -0,0 +1,2 @@
+licenses.html linguist-vendored
+about.hbs linguist-vendored

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+licenses.html linguist-vendored`
	`2`	`+about.hbs linguist-vendored`