Added line ending in gitattributes for consistency (#939)

Author: Singleton06

.gitattributes

@@ -8,3 +8,5 @@
 *.gitattributes text
 .gitignore text
 *.md text
+*.js text eol=lf
+*.jsx text eol=lf

CONTRIBUTORS.md

@@ -37,6 +37,7 @@ Cerner Corporation
 - Sai Gorantla [@saigorantla]
 - Derek Yu [@yuderekyu]
 - Hardik Jain [@hardikjain29]
+- Dustin Singleton [@singleton06]
 
 [@ryanthemanuel]: https://github.com/ryanthemanuel
 [@Matt-Butler]: https://github.com/Matt-Butler
@@ -77,3 +78,4 @@ Cerner Corporation
 [@saigorantla]: https://github.com/saigorantla
 [@yuderekyu]: https://github.com/yuderekyu
 [@hardikjain29]: https://github.com/hardikjain29
+[@singleton06]: https://github.com/Singleton06