Upgrade remark-git-contributors from ~1.1.0 to ~2.0.0 (#22)

package.json

@@ -15,7 +15,7 @@
     "pkg-config": "~1.1.1",
     "remark": "~10.0.1",
     "remark-collapse": "~0.1.2",
-    "remark-git-contributors": "~1.1.0",
+    "remark-git-contributors": "~2.0.0",
     "remark-github": "~7.0.3",
     "remark-lint": "~6.0.2",
     "remark-lint-blockquote-indentation": "~1.0.2",